Research progress in the cardiac lymphatic system and myocardial repair after myocardial infarction / 中南大学学报(医学版)

The lymphatic system of the heart plays an important role in the repair process after myocardial injury and may regulate normal tissue homeostasis and natural regeneration via maintaining fluid homeostasis and controlling the inflammatory response. The lymphatic system in the heart is activated after myocardial injury and is involved in the scarring process of the heart. Recent studies on the lymphatic system and myocardial repair of the heart have developed rapidly, and the mechanisms for lymphangiogenesis and lymphatic endothelial cell secretion have been elucidated by different animal models. A deep understanding of the structural, molecular, and functional characteristics of the lymphatic system of the heart can help develop therapies that target the lymphatic system in the heart. Summarizing the progress in studies on targets related to myocardial repair and the cardiac lymphatic system is helpful to provide potential new targets and strategies for myocardial repair therapy after myocardial infarction.

Rosuvastatin acts on the lymphatic system to improve atherosclerosis / 中华心血管病杂志

Objective: To investigate whether rosuvastatin acts on lymphatic system and influences lymphatic system-mediated reverse cholesterol transport to play an anti-atherosclerosis role. Methods: Forty-eight apolipoprotein E-/- mice fed a high fat diet were used to construct the atherosclerosis model. They were randomly divided into 4 groups with 12 rats in each group. They were treated with rosuvastatin, vascular endothelial growth factor-C (VEGF-C) and rosuvastatin+VEGF-C inhibitors as experimental group, and no intervention measures were given in control group. After 8 weeks, aortic plaque area, high density lipoprotein cholesterol (HDL-C) content in lymph fluid, the function of popliteal lymphatic drainage of peripheral Evans blue, and the ability of lymphatic system to transport peripheral cell membrane red fluorescent probes to label high-density lipoprotein (HDL) were detected. Subsequently, the effects of rosuvastatin on proliferation, migration and tubular function of lymphoendothelial cells and the expression of scavenger receptor class B type 1 (SR-B1) on lymphoendothelial cells at different concentrations were detected. Results: Compared with the control group, Rosuvastatin and VEGF-C could reduce the area of aortic atherosclerotic plaque (P<0.05). In addition to rosuvastatin plus VEGF-C inhibitor, the intra-aortic plaque area increased (P<0.05). Compared with the control group, Rosuvastatin could increase the content of HDL-C in lymphatic fluid (P<0.05), enhance the drainage function of lymphatic vessels, and enhance the capacity of HDL in the transport tissue fluid of lymphatic system. Compared with the control group, VEGF-C increased the content of HDL-C in mouse lymph fluid (P<0.01), enhanced the drainage function of popliteal lymphatic canal, and enhanced the ability of lymphatic system to transport HDL. With the addition of VEGF-C inhibitor on the basis of rosuvastatin, the content of HDL-C in lymph fluid was reduced, the drainage of popliteal lymphatic canal was interrupted, and the ability of lymphatic system to transport HDL was reduced. Western blotting showed that rosuvastatin increased the protein expression of SR-B1. Conclusion: Rosuvastatin can promote the proliferation, migration and tube formation of lymphatic endothelial cells. At the same time, SR-B1 expression on lymphatic endothelial cells is promoted, thus enhancing the lymphatic system mediated cholesterol reversal transport and playing the role of anti-atherosclerosis.

Pathway of Diatoms Enter Experimental Rabbits through the Lymphatic System of the Digestive Tract / 法医学杂志

OBJECTIVES@#To study whether diatoms can enter the body through the lymphatic system of the digestive tract.@*METHODS@#Twenty experimental rabbits were divided into the test group and the control group randomly, and intragastric administration was performed with 20 mL water sample from the Pearl River and 20 mL ultrapure water, respectively. After 30 min, lymph, lungs, livers and kidneys were extracted for the diatom test. The concentration, size and type of diatoms were recorded.@*RESULTS@#The concentration of diatoms of the test group was higher than that of the control group (P<0.05). In the test group, Stephanodiscus, Coscinodiscus, Cyclotella, Melosira, Nitzschia, Synedra, Cymbella, and Navicula were detected; in the control group, Stephanodiscus, Coscinodiscus and Cyclotella were detected. The long diameter and the short diameter of diatoms of the test group were higher than those of the control group (P<0.05). In the test group, 1-2 diatoms were detected in 3 lung samples and 2 liver samples, which were Stephanodiscus or Cyclotella, and no diatoms were detected in the kidney samples; in the control group, 1-2 diatoms were detected in 2 lung samples and 3 liver samples, which were Stephanodiscus or Coscinodiscus, and no diatoms were detected in the kidney samples.@*CONCLUSIONS@#Diatoms can enter the body through the lymphatic fluid, which is one of the reasons for the presence of diatoms in tissues and organs of non-drowning cadavers.

Malformaciones linfáticas abdominales en una población pediátrica: experiencia en un centro de referencia de Medellín, Colombia / Abdominal lymphatic malformations in a pediatric population: Experience in a referral center in Medellín, Colombia

Introducción. Los linfangiomas son anormalidades benignas del sistema linfático, que corresponden a dilataciones quísticas de estos vasos y se localizan especialmente en el cuello. Solo el 10 % de todas estas malformaciones se encuentran en el abdomen y presentan síntomas variables de acuerdo al tamaño y su ubicación especifica, siendo el dolor abdominal el principal síntoma. Métodos. Se presentan cinco pacientes pediátricos con malformaciones linfáticas abdominales. Se describen su cuadro clínico, localización, tratamiento y la experiencia en el manejo de dicha patología en un hospital de referencia. Resultados. Los métodos más apropiados para hacer una aproximación diagnóstica son la ecografía, la tomografía computarizada y la resonancia nuclear magnética. Dentro de las opciones descritas para el tratamiento están la farmacológica, la escleroterapia y la resección quirúrgica, tanto por vía abierta como por laparoscopia. Conclusión. Existe una variedad de métodos para realizar la resección de los linfangiomas abdominales, pero la cirugía sigue siendo la más efectiva, especialmente cuando se cuenta con la laparoscopia como una herramienta terapéutica.

Introduction. Lymphangiomas are benign abnormalities of the lymphatic system, which correspond to cystic dilations of these vessels and are located especially in the neck. Only 10% of all these malformations are found in the abdomen and present variable symptoms according to size and their specific location, with abdominal pain being the main symptom. Methods. Five pediatric patients with abdominal lymphatic malformations are presented. Their clinical presentation, location, treatment and experience in the management of this pathology in a referral hospital are described. Results. The most appropriate methods to make a diagnostic approach are ultrasound, computed tomography and magnetic resonance imaging. Among the options described for treatment are pharmacological, sclerotherapy and surgical resection, both open and laparoscopic. Conclusion. There are a variety of methods for resecting abdominal lymphangiomas, but surgery remains the most effective, especially when laparoscopy is used as a therapeutic tool.

Terapia complexa descongestiva no tratamento de linfedema pós-mastectomia / Descongestive complex therapy in the treatment of lymphedema after mastectomy

Introdução: O linfedema é a complicação mais frequente no pós-operatório do câncer de mama. Objetivo: Identificar a efetividade do uso da Terapia Complexa Descongestiva (TCD) na redução do volume e no tratamento intensivo do linfedema em pacientes submetidas ao procedimento cirúrgico com esvaziamento axilar devido ao câncer de mama. Métodos: Trata-se de uma revisão sistemática, para o qual foram consultados os bancos de dados Bireme e Pubmed, utilizando artigos científicos em português e inglês de revistas indexadas nas bases de dados Medline, Scielo, Lilacs, Register of Controlled Trials (Cochrane Central) e Physiotherapy Evidence Database (PEDro), publicados entre os anos de 2004 e 2019. Para a construção do trabalho foram incluídos estudos que estivessem disponíveis na íntegra, que a população alvo fosse composta por mulheres submetidas ao procedimento cirúrgico devido ao câncer de mama, com esvaziamento axilar, que apresentassem linfedema e que incluíssem em seus tratamentos, um protocolo fisioterapêutico de TCD. Também de forma independente, foi avaliada a qualidade metodológica dos estudos selecionados com a Escala de Qualidade de JADAD. Resultados: Atualmente, o padrão-ouro dentre as principais técnicas fisioterapêuticas utilizadas para o tratamento do linfedema é a TCD, a qual é composta por drenagem linfática manual, cuidados com a pele e unhas, bandagem de compressão e exercícios terapêuticos. Conclusão: A TCD é considerada o método mais utilizado e eficiente na redução do volume e no tratamento intensivo do linfedema pósmastectomia. (AU)

Introduction: The lymphedema is the most common postoperative complication of breast cancer. Objective: The present study aims to identify the effectiveness of the use of Complex Decongestive Therapy (CDT) in reducing volume and intensive treatment of lymphedema in patients undergoing axillary emptying due to breast cancer. Methods: This was a systematic review, for which Bireme and Pubmed databases were consulted, using scientific articles in Portuguese and English from journals indexed in Medline, Scielo, Lilacs, Register of Controlled Trials (Cochrane Central) databases and Physiotherapy Evidence Database (PEDro), all of them published between the years 2004 to 2019. For the construction of this study, we included articles available in full, with a target population consisting of women undergoing the surgical procedure due to breast cancer, with axillary emptying, who presented lymphedema and who included in their treatments a physical therapy protocol of CDT. Also, independently, the methodological quality of the studies selected was evaluated using the JADAD Quality Scale. Results: Currently, the gold standard among the main physiotherapeutic techniques used for the treatment of lymphedema is CDT, which consists of manual lymphatic drainage, skin and nail care, compression bandaging and therapeutic exercises. Conclusion: The CDT is considered the most used and efficient method for volume reduction and intensive treatment of post-mastectomy lymphedema. (AU)

Nanostructured lipid carrier containing hydroxymethylnitrofurazone: preparation, characterization and in vitro and in vivo evaluation of leishmanicidal activity / Carreador lipídico nanoestruturado contendo hidroximetilnitrofural: preparação, caracterização físico-química e avaliação in vitro e in vivo da atividade leishmanicida

Leishmaniasis, a neglected tropical disease (NTD), is a set of diseases caused by obligatory parasitic protozoa of the genus Leishmania. And it has cutaneous and visceral eishmaniasis as its main forms. Treatment includes pentavalent antimonials. These drugs have several disadvantages, such as the need for parenteral administration, use of high dosages, long duration of treatment, severe toxicity, resistance and variable efficacy. The candidate for hydroxymethylnitrofural drug (NFOH), a prodrug derived from nitrofural, showed high activity in cell cultures infected with Trypanosoma cruzi and less toxicity when compared to nitrofural. Due to its low solubility in water and reduced bioavailability, NFOH has failed the in vivo efficacy tests. Nanostructured drug delivery systems have the potential to overcome these challenges due to their evident advantages: greater therapeutic efficacy, less toxicity, modified drug release and increased gastrointestinal absorption of drugs with low water solubility. The objective of this project will be the preparation and evaluation of the physicochemical characteristics of a nanostructured lipid carrier containing hydroxymethylnitrofural (NLC-NFOH). The NFOH showed the highest solubility in Miglyol® 840 among the tested liquid lipids. For solid lipids, Gelucire® 50/13 and Precirol® ATO5 proved to be more suitable for the solubilization of NFOH. The optimized NLC-NFOH consisted of these three lipids. These lipids were selected using a quick Technobis Crystal 16TM methodology, microscopy and DSC. Different lipid selection tools provided scientific knowledge relevant to the development of NLC. The NLC-NFOH had an average z of 198.6 ± 5.4 nm, a PDI of 0.11 ± 0.01 and a zeta potential of -13.7 ± 0.7 mV. This study allowed a design space development approach of the first NLC-NFOH with the potential to treat leishmaniasis orally. The development of a sensitive bioanalytical method using HPLC and evaluation of some analytical figures of merit for the validation allowed the quantification of NFOH and NF. The bioanalytical method for analysis of NFOH and NF use Zorbax SB-C18, 5µm, (4.6x250mm) HPLC column. The mobile phase was consisted of acetonitrile:water (20:80 v/v) with flow rate of 1.2 ml/min, at UV detection of 370 nm. The linearity of NFOH and NF was found in the range 0.0253.0 µg/ml with a correlation coefficient of r > 0.98. The precision was 2.44 to 13.77% for NFOH and 2.61 to 18.42%; the accuracy was 2.66 to 14.28% for NFOH and 2.09 to 19.06% for NF. The method showed to be suitable for effectively evaluation of NFOH is serum. NLC-NFOH (2.8 mg/kg) was administered to animals by gavage, and the blocking flow of the chylomicrons model was performed with an intraperitoneal injection of cycloheximide. The presence of NFOH in serum was evaluated with and without cycloheximide. The cytotoxicity assay of NLC-NFOH and blank-NLC showed more than 90% viable cells at the maximum concentration used (2560 µM). NFOH and NF were detected at 1h after the gavage of DMSO-NFOH or NLC-NFOH, without the pretreatment with cycloheximide. The concentration found for DMSO-NFOH and NLC-NFOH were 0.0316 and 0.0291 µg/mL, respectively. The NLC presented the NFOH absorption by the lymphatic system, demonstrated by blocking chylomicrons flow

A leishmaniose, uma doença tropical negligenciada (DTN), é um conjunto de doenças causadas por protozoários parasitas obrigatórios do gênero Leishmania. E tem como formas principais a leishmaniose cutânea e visceral. O tratamento inclui antimoniais pentavalentes. Esses fármacos apresentam várias desvantagens, como necessidade de administração parenteral, uso de altas dosagens, longa duração do tratamento, toxicidade grave, resistência e eficácia variável. O candidato ao fármaco hidroximetilnitrofural (NFOH), um pró-fármaco derivado do nitrofural, apresentou alta atividade em culturas de células infectadas pelo Trypanosoma cruzi e menor toxicidade quando comparado ao nitrofural. Devido à sua baixa solubilidade em água e biodisponibilidade reduzida, o NFOH falhou nos testes de eficácia in vivo. Os sistemas nanoestruturados de liberação de fármacos têm potencial para superar esses desafios devido às suas vantagens evidentes: maior eficácia terapêutica, menor toxicidade, liberação modificada do fármaco e aumento da absorção gastrointestinal de fármacos com baixa solubilidade em água. O objetivo deste projeto será a preparação e avaliação das características físico-químicas de um carreador lipídico nanoestruturado contendo hidroximetilnitrofural (NLC-NFOH). O NFOH apresentou a maior solubilidade no Miglyol® 840 entre os lipídios líquidos testados. Para lipídios sólidos, Gelucire® 50/13 e Precirol® ATO5 se mostraram mais adequados para a solubilização de NFOH. O NLC-NFOH otimizado consistiu desses três lipídios. Esses lipídios foram selecionados usando Technobis Crystal 16TM, microscopia e DSC. Diferentes ferramentas de seleção de lipídios forneceram conhecimento científico relevante para o desenvolvimento de NLC. O NLC-NFOH teve z-average de 198,6 ± 5,4 nm, PDI de 0,11 ± 0,01 e potencial zeta de -13,7 ± 0,7 mV. Este estudo permitiu o desenvolvimento por abordagem de Design Space do primeiro NLC-NFOH com potencial para tratar a leishmaniose por via oral. O desenvolvimento de um VIII método bioanalítico sensível utilizando HPLC e a avaliação de algumas figuras analíticas de mérito para a validação permitiram a quantificação de NFOH e NF em soro. O método bioanalítico para análise de NFOH e NF usou coluna de HPLC Zorbax SB-C18, 5 µm, (4,6 x 250 mm). A fase móvel foi constituída por acetonitrila: água (20:80 v / v) com vazão de 1,2 ml / min, com detecção no UV de 370 nm. A linearidade de NFOH e NF foi encontrada na faixa de 0,0253,0 µg / ml com um coeficiente de correlação de r> 0,98. A precisão foi de 2,44 a 13,77% para NFOH e 2,61 a 18,42%; a precisão foi de 2,66 a 14,28% para NFOH e 2,09 a 19,06% para NF. O método mostrou-se adequado para avaliação efetiva do NFOH no soro. NLC-NFOH (2,8 mg / kg) foi administrado aos animais por gavagem, e o modelo de bloqueio do fluxo de quilomícrons foi realizado com injeção intraperitoneal de cicloheximida. A presença de NFOH no soro foi avaliada com e sem cicloheximida. O ensaio de citotoxicidade de NLC-NFOH e brancoNLC mostrou mais de 90% de células viáveis na concentração máxima utilizada (2560 µM). NFOH e NF foram detectados 1h após a gavagem de DMSO-NFOH ou NLC-NFOH, sem o pré-tratamento com cicloheximida. As concentrações encontradas para DMSO-NFOH e NLC-NFOH foram 0,0316 e 0,0291 µg / mL, respectivamente. O NLC apresentou a absorção do NFOH pelo sistema linfático, demonstrada pelo bloqueio do fluxo dos quilomícrons

Advances of Angiopoietin-Tie axis in vascular and lymphatic system-related diseases / 生物工程学报

Endothelial cells that form the inner layers of both blood and lymphatic vessels are important components of the vascular system and are involved in the pathogenesis of vascular and lymphatic diseases. Angiopoietin (Ang)-Tie axis in endothelial cells is the second endothelium-specific ligand-receptor signaling system necessary for embryonic cardiovascular and lymphatic development in addition to the vascular endothelial growth factor receptor pathway. The Ang-Tie axis also maintains vascular homeostasis by regulating postnatal angiogenesis, vessel remodeling, vascular permeability, and inflammation. Therefore, the dysfunction of this system leads to many vascular and lymphatic diseases. In light of the recent advances on the role of the Ang-Tie axis in vascular and lymphatic system-related diseases, this review summarizes the functions of the Ang-Tie axis in inflammation-induced vascular permeability, vascular remodeling, ocular angiogenesis, shear stress response, atherosclerosis, tumor angiogenesis, and metastasis. Moreover, this review summarizes the relevant therapeutic antibodies, recombinant proteins, and small molecular drugs associated with the Ang-Tie axis.

A Canine Model for Lymphangiography and Thoracic Duct Access

OBJECTIVE: To evaluate the technical feasibility of intranodal lymphangiography and thoracic duct (TD) access in a canine model.MATERIALS AND METHODS: Five male mongrel dogs were studied. The dog was placed in the supine position, and the most prominent lymph node in the groin was accessed using a 26-gauge spinal needle under ultrasonography (US) guidance. If the cisterna chyli (CC) was not opacified by bilateral lymphangiography, the medial iliac lymph nodes were directly punctured and Lipiodol was injected. After opacification, the CC was directly punctured with a 22-gauge needle. A 0.018-in microguidewire was advanced through the CC and TD. A 4-Fr introducer and dilator were then advanced over the wire. The microguidewire was changed to a 0.035-in guidewire, and this was advanced into the left subclavian vein through the terminal valve of the TD. Retrograde TD access was performed using a snare kit.RESULTS: US-guided lymphangiography (including intranodal injection of Lipiodol [Guerbet]) was successful in all five dogs. However, in three of the five dogs (60%), the medial iliac lymph nodes were not fully opacified due to overt Lipiodol extravasation at the initial injection site. In these dogs, contralateral superficial inguinal intranodal injection was performed. However, two of these three dogs subsequently underwent direct medial iliac lymph node puncture under fluoroscopy guidance to deliver additional Lipiodol into the lymphatic system. Transabdominal CC puncture and cannulation with a 4-Fr introducer was successful in all five dogs. Transvenous retrograde catheterization of the TD (performed using a snare kit) was also successful in all five dogs.CONCLUSION: A canine model may be appropriate for intranodal lymphangiography and TD access. Most lymphatic intervention techniques can be performed in a canine using the same instruments that are employed in a clinical setting.

Higroma quístico fetal / Fetal cystic hygroma

El higroma quístico congénito o linfangioma es un tumor del sistema linfático, es de origen embrionario y se origina por la obstrucción del drenaje de los sacos linfáticos. Su localización en orden de frecuencia es en las regiones cervical, axilar, intraperitoneal e inguinal, y muy raro como alteración única en el mediastino anterior. Paciente de 32 años de edad, con embarazo 16 sem ± 6 días y reporte de ecografía: Embarazo de 15 sem ± 20 días, normohidramnia, higroma quístico, Ausencia de hueso nasal además de una comunicación interventricular. Paciente en sala de legrado bajo sedación profunda, se obtiene producto de sexo masculino con alteraciones faciales y aumento de volumen en región cervical. Podemos concluir que, el control prenatal es importante realizar para obtener un diagnóstico precoz con examen ecográfico seriado, estudio genético, ecocardiografía fetal y para dar tratamiento quirúrgico es necesario conformar un equipo multidisciplinario.(AU)

The congenital cystic hygroma or lymphangioma is a tumor of the lymphatic system, is of embryonic origin and is caused by the obstruction of the drainage of the lymphatic sacs. Its location in order of frequency is in the cervical, axillary, intraperitoneal and inguinal regions, and very rare as a single alteration in the anterior mediastinum. A 32-year-old patient with a pregnancy of 16 weeks ± 6 days and an ultrasound report: Pregnancy of 15 weeks ± 20 days, normohydramnia, cystic hygroma, Absence of nasal bone in addition to interventricular communication. Patient in curettage room under deep sedation, male product with facial alterations and volume increase in cervical region is obtained. We can conclude that prenatal control is important to obtain an early diagnosis with serial ultrasound examination, genetic study, fetal echocardiography and to give surgical treatment it is necessary to form a multidisciplinary team.(AU)

Funcionalidade e qualidade de vida em indivíduos com linfedema unilateral em membro inferior: um estudo transversal / Functionality and quality of life of patients with unilateral lymphedema of a lower limb: a cross-sectional study

O linfedema de membros inferiores é uma doença crônica decorrente de dano no sistema linfático que influencia a mobilidade, a funcionalidade e a qualidade de vida dos indivíduos. Questionários e o teste físico são métodos bastante práticos, de fácil aplicação e baixo custo, que fornecem dados importantes para a avaliação desses pacientes. Objetivos Avaliar a influência do linfedema unilateral de membro inferior na funcionalidade e na qualidade de vida, correlacionando três ferramentas de avaliação. Métodos Estudo descritivo com 25 indivíduos com linfedema unilateral em membro inferior, de ambos os sexos. Foi avaliada a perimetria e foram aplicados The Medical Outcome Study Short Form-36 Health Survey (SF-36) para avaliação da qualidade de vida, Lymphoedema Functioning, Disability and Health Questionnaire for Lower Limb Lymphoedema (Lymph-ICF-LL) para estudo das habilidades físicas, mentais e sociais relacionadas ao linfedema e o Timed Up and Go (TUG) para avaliação da funcionalidade. Resultados Houve a presença de linfedema em todo o membro inferior dos participantes. Os domínios mais prejudicados pelo linfedema foram os aspectos físicos (25,0 ± 31,4) e emocionais (36,0 ± 42,9) no SF-36 e o domínio mobilidade (6,0 ± 2,6) no Lymph-ICF-LL. O TUG foi realizado em 9,88 ± 1,98 s. Houve correlação entre o TUG e os questionários e entre os dois questionários utilizados. Conclusões Indivíduos com linfedema unilateral em membro inferior apresentam um impacto negativo na qualidade de vida e na funcionalidade avaliadas através de questionários, que correlacionam entre si. Não foi encontrada alteração no TUG, mas houve correlação entre ele e os questionários utilizados

Lymphedema of the lower limbs is a chronic disease caused by damage to the lymphatic system that influences people's mobility, functionality, and quality of life. Questionnaires and physical test are very practical, easy to apply, and low cost methods that provide important data for evaluation of these patients. Objectives To evaluate the influence of unilateral lower limb lymphedema on functionality and quality of life, correlating 3 assessment tools. Methods This was a descriptive study investigating 25 patients of both sexes with unilateral lymphedema in a lower limb. Limb volume was assessed using circumferential tape measurements, the Medical Outcomes Study Short Form-36 Health Survey (SF-36) was used to assess quality of life, the Lymphoedema Functioning, Disability and Health Questionnaire for Lower Limb Lymphoedema (Lymph-ICF-LL) was used to assess physical, mental, and social skills related to lymphedema, and the Timed Up and Go (TUG) test was used for functional assessment. Results Lymphedema was present throughout the affected lower limb of participants. The domains most affected by lymphedema were physical aspects (25.0 ± 31.4) and emotional aspects (36.0 ± 42.9) from the SF-36 and the mobility domain (6.0 ± 2.6) from the Lymph -ICF-LL. Patients performed the TUG in 9.88 ± 1.98 seconds. The TUG was correlated with the questionnaires and the questionnaires were correlated with each other. Conclusions People with unilateral lower limb lymphedema exhibited negative impacts on quality of life and functionality, as evaluated by questionnaires, which were correlated with each other. TUG performance was within normal limits, but results correlated with the questionnaires used

Is Laparoscopic Approach Also Safe for the Treatment of Remnant Gastric Cancer?

The most important advantages of laparoscopic gastrectomy are the minimal invasiveness, including less postoperative pain, shorter recovery, and minimal complications. A laparoscopic distal gastrectomy is accepted widely as a standard treatment for gastric cancer. On the other hand, a laparoscopic total gastrectomy has not been popularized as a distal gastrectomy because of the complexity of a lymph node dissection and the diversity of reconstruction. In terms of laparoscopic surgery for a remnant gastrectomy, there are three key points, which are critical for safe operation: adequate lymph node dissection, meticulous adhesiolysis, and reconstruction. After radical surgery for gastric cancer, the intra-abdominal condition is greatly changed. In addition, the lymphatic anatomy around the stomach is broken and surgeons should be aware of a newly developed lymphatic system to perform adequate node dissection. An esophago-jejunal reconstruction is at risk of leakage. Until evidence that is more concrete can be obtained, experienced surgeons should consider the laparoscopic approach.

Development of Castleman Disease in the Paravertebral Space Mimicking a Neurogenic Tumor / 대한흉부외과학회지

Castleman disease is a relatively rare disease, characterized by well-circumscribed benign lymph-node hyperplasia. The disease may develop anywhere in the lymphatic system, but is most commonly reported as unicentric Castleman disease in the mediastinum along the tracheobronchial tree. It is usually asymptomatic and detected on plain chest radiography as an incidental finding. We report an incidentally detected case of Castleman disease in the paravertebral space that was preoperatively diagnosed as a neurogenic tumor and treated by complete surgical resection.

Efeito do uso do taping na redução do volume do linfedema secundário ao câncer de mama: revisão da literatura / Effect of taping as treatment to reduce breast cancer lymphedema: literature review

O linfedema é a complicação mais frequente no pós-operatório de câncer de mama, podendo afetar diretamente as atividades diárias. O objetivo desse estudo foi verificar o uso do taping como forma alternativa/auxiliar de tratamento na redução do linfedema. Foi realizada uma revisão da literatura de artigos científicos indexados nas bases de dados PubMed, LILACS, MEDLINE, PEDro e Google Acadêmico, onde foram selecionados nove artigos científicos. Verificou-se que o uso do taping é uma técnica complementar na redução do linfedema, podendo ser uma forma alternativa de tratamento para a redução deste, apesar de não ser capaz de substituir a terapia compressiva multicamadas

Lymphedema is the most common complication during the postoperative period after surgery for breast cancer and can have a direct impact on daily activities. The objective of this study was to review the use of taping as an alternative/complementary treatment to reduce lymphedema. A literature review was conducted of scientific articles indexed on the PubMed, LILACS, MEDLINE, and PEDro databases and Google Scholar, and nine articles were selected. It was found that taping is a complementary therapy for reducing lymphedema, which may be used as an alternative treatment method, but cannot substitute multilayer compression therapy.

Late-Onset Post-radiation Lymphedema Provoked by Bee Venom Therapy: A Case Report

Lymphedema is a common complication associated with cancer itself or with cancer treatment. Lymphedema infrequently occurs after drug therapy. Bee venom is one of the materials used in acupuncture, and it has been used in the treatment of a variety of inflammatory diseases including arthritis. We report a 74-year-old male patient with late-onset post-radiation lymphedema provoked by bee venom therapy. He was free of lymphedema for 5 years after the complete remission of prostate cancer which had been treated with transurethral resection and radiation therapy. The patient developed left leg swelling after undergoing bee venom therapy for left hip pain. Computed tomography and lymphoscintigraphy showed lymphedema without tumor recurrence or infection. The lymphatic system was suspected to be injured by bee venom therapy and lymphedema was provoked. Bee venom therapy should be used cautiously in patients prone to lymphedema.

Hennekam Syndrome: A Case Report

Hennekam syndrome is a rare autosomal recessive disorder resulting from malformation of the lymphatic system. The characteristic signs of Hennekam syndrome are lymphangiectasia, lymph edema, facial anomalies, and mental retardation. This is a case in which a patient presented with left-arm lymphedema, facial-feature anomalies, and multiple organ lymphangiectasia consistent with symptoms of Hennekam syndrome. There is no curative therapy at this time, but rehabilitative treatments including complete decongestive therapy for edema control appeared to be beneficial.

Surgery of multiple lymphangioma in small bowel: a rare case report of chronic gastrointestinal bleeding

Small bowel lymphangioma is a rare benign tumor of the lymphatic system, characterized by the presence of dilated lymphatic spaces and significant gastrointestinal bleeding. Small bowel lymphangiomas are rare in adults and case reports are few. Lymphangiomas in the jejunum or ileum are extremely rare and account for less than 1% of all lymphangiomas. The case reported herein is of an older patient (70-year-old male) with melena and chronic anemia (hemoglobin count < 5 g/dL) who had small-sized multiple lymphangiomas in his small bowel (jejunum). Surgical resection was performed after failure of treatment by gastroenteroscopy. Final pathological analysis revealed lymphangioma with thrombus and hemorrhage. After surgery, he no longer had decreased hemoglobin count, nor symptoms of anemia and melena. Also, at the last follow-up visit, the patient's hemoglobin count patient was normal and he returned to normal daily functions.

Contribuição de um módulo instrucional no desenvolvimento de habilidades de avaliação de linfonodos: um experimento / Contribution of an instructional module in the development of lymph node assessment skills: an experiment

A coleta de dados por meio da anamnese e do exame físico é etapa indispensável para a implementação do Processo de Enfermagem; para realização do exame físico empregam-se as técnicas de inspeção, palpação, percussão e ausculta, que permitem confirmar padrões de normalidade ou a presença de alterações. É de interesse, neste estudo, o exame dos linfonodos, componentes que podem, a partir de suas alterações, nortear a terapêutica e as ações de enfermagem a serem executadas. Tais estruturas são avaliadas pelas técnicas de inspeção e palpação, além da anamnese. Considerando a necessidade de criação de estratégias cada vez mais interativas, baseadas na proposta da aprendizagem experiencial, este estudo experimental, randomizado, controlado e mascarado tem como objetivo avaliar a contribuição de um Módulo Instrucional na aquisição de conhecimentos sobre a avaliação de características de linfonodos, por estudantes de enfermagem. A intervenção educativa foi composta pela utilização de um módulo instrucional, formado por um protótipo de palpação e um instrumento-guia de registro. Participaram do estudo 68 estudantes dos cursos de graduação em enfermagem de uma instituição pública paulista que estavam cursando a disciplina de semiologia e semiotécnica. Em ambos os grupos (experimento e controle) foi realizada inicialmente a palpação dos linfonodos em um protótipo (A) seguindo-se o registro livre das características e número das estruturas avaliadas. O grupo controle seguiu para avaliação final, similar à inicial, em outro protótipo (C) utilizando o instrumento de registro livre. O grupo experimento foi submetido à intervenção educativa, que consistiu no manejo do módulo instrucional (protótipo B e instrumento-guia de registro dos dados) e, após, realizou a avaliação final, similar à do grupo controle. Após a avaliação final, o grupo controle foi apresentado à intervenção educativa. Por último, em ambos os grupos, os estudantes registraram sua opinião sobre a atividade educativa realizada. Utilizou-se para análise os registros realizados nas fases inicial e final; os dados foram categorizados e, para avaliar idade, curso e sexo, utilizou-se frequência, média, mediana e desvio-padrão; para verificar a interação entre os acertos das variáveis pelos grupos nos tempos, optou-se pelo modelo de regressão linear mista. A análise de interação entre os grupos permite concluir que o grupo experimento apresentou significativa diferença com relação ao grupo controle no acerto de tamanho (p <= 0,0001), consistência (p <= 0,0001), mobilidade (p <= 0,0001) e coalescência (p = 0,0021). Ainda, os estudantes avaliaram positivamente a atividade, destacando sua capacidade de relacionar a teoria com a prática, sua facilidade e boa representação da realidade. Os resultados positivos do grupo experimento, bem como a aceitação referida pelo público-alvo reforçam a utilização do módulo instrucional como estratégia de ensino complementar às aulas de semiologia e semiotécnica no ensino da avaliação de características de linfonodos

The data colleta through anamnesis and physical examination is an indispensable step for the implementation of the Nursing Process; to perform the physical examination are used the techniques of inspection, palpation, percussion and auscultation, which allow to confirm patterns of normality or the presence of changes. It is of interest, in this study, the examination of the lymph nodes, components that can, from their alterations, guide the therapeutics and the nursing actions to be performed. Such structures are evaluated by the techniques of inspection and palpation, in addition to anamnesis. Considering the need to create increasingly interactive strategies based on the proposal of experiential learning, this experimental, randomized, controlled and double blind study aims to evaluate the contribution of an Instructional Module in the acquisition of knowledge about the evaluation of lymph node characteristics, by nursing students. The educational intervention was composed by the use of an instructional module, formed by a prototype of palpation and a guide instrument of registration. The participants of the study were 68 undergraduate nursing students from a public institution in São Paulo who were attending the discipline of semiology and semitechnical. In both groups (experiment and control) the palpation of the lymph nodes was initially performed in a prototype (A) followed by the free registration of the characteristics and number of the structures evaluated. The control group followed for final evaluation, similar to the initial one, in another prototype (C) using the free registry instrument. The experimental group was submitted to the educational intervention, which consisted in the management of the instructional module (prototype B and instrument guide of data recording) and, afterwards, made the final evaluation, similar to that of the control group. After the final evaluation, the control group was presented to the educational intervention. Finally, in both groups, the students recorded their opinion about the educational activity performed. We used for analysis the records made in the initial and final phases; the data were categorized and, to evaluate age, course and sex, we used frequency, mean, median and standard deviation; to verify the interaction between the correctness of the variables by the groups in the times, we opted for the mixed linear regression model. The analysis of interaction between the groups allows to conclude that the experiment group presented a significant difference in relation to the control group in the variables size of the lymph node (P <= 0.0001), consistency (p <= 0.0001), mobility (p <= 0.0001) and coalescence (p = 0.0021). Still, the students positively evaluated the activity, highlighting their ability to relate theory to practice, its easy and good representation of reality. The positive results of the experiment group as well as the acceptance reported by the target public reinforce the use of the instructional module as a complementary teaching strategy to the semiology and semi-technical classes in teaching the evaluation of lymph node characteristics

Linfoma no Hodgkin primario testicular / Non hodgkin primary testicular limphoma

Los linfomas constituyen un grupo diverso de neoplasias malignas, que se originan del sistema linfático(1). Aproximadamente el 85% se agrupan dentro de los denominados Linfomas No Hodgkin (LNH). Los LNH constituyen un numeroso grupo de linfomas derivados de la transformación neoplásica de los linfocitos B, T y Células NK, provenientes de diversas zonas que comprometen los folículos linfáticos en los nódulos linfáticos o en el sistema linfoide extranodal(2). Las localizaciones extra ganglionares primarias representan más de 10% de los casos y los sitios más frecuentes comprenden estómago, intestino delgado, orofaringe, piel, hígado y cerebro; además de otras bastante raras como ano, corazón, músculos y encías. Los linfomas testiculares primarios son muy raros, representan aproximadamente el 5% de todas las neoplasias testiculares malignas, menos del 1% de los LNH y el 4% de los LNH extra nodales(3). Esta neoplasia constituye el tumor maligno testicular más frecuente en sujetos ancianos. La presentación clínica típica es una masa testicular unilateral acompañada en ocasiones de hidrocele y dolor agudo escrotal. A continuación presentamos un caso que requirió de la participación de múltiples especialidades de nuestra institución para un manejo conjunto y finalmente el paciente falleció(AU)

The lymphomas constitute a diverse group of malignant neoplasms, which originate from the lymphatic system(1). Approximately 85% are grouped into the so-called Non-Hodgkin's Lymphomas (NHL). NHL are a large group of lymphomas derived from the neoplastic transformation of B, T and NK cells of different areas with involvement of lymphatic follicles in the lymph nodes or the extranodal lymphoid system(2). The primary extraganglionic sites represent more than 10% of the cases and the most frequent sites include stomach, small intestine, oropharynx, skin, liver and brain; others, quite rare, are anus, heart, muscles and gums.Primary testicular lymphomas are extremely rare, accounting for approximately 5% of all malignant testicular neoplasms, less than 1% of NHL and 4% of extranodal NHL(3). This neoplasm constitutes the most frequent testicular malignant tumor in elderly subjects. The typical clinical presentation is a unilateral testicular mass, sometimes accompanied by hydrocele and acute scrotal pain. We present a case which required the participation of multiple specialties of our institution for management but the patient finally died(AU)

Linfangioma en maxilar de un recién nacido: reporte de un caso clínico / Linfangioma em queixada de um recém-nascido: relato de um caso / Maxilar lymphangioma in a newborn patient: A case report

Los linfangiomas son neoplasias benignas que ocurren predominantemente en la infancia, son muy infrecuentes, y nacen del sistema linfático. Cuando ocurren en la cavidad oral, la localización más común es el dorso de la lengua, seguido por los labios, la mucosa bucal, el paladar blando y el piso de la boca. La prevalencia es de 1 a 3 /10.000 nacidos vivos, afectando ambos generos por igual, involucran en un 75% la cabeza y el cuello, seguido por el tronco, abdomen y extremidades. En esta publicación presentamos una situación de una paciente de sexo femenino de menos de 24 horas de vida que reside en el Servicio de Neonatología H.I.G.A. Pte. Perón en la que se decidió realizar la exéresis de la patología. El objetivo del tratamiento instaurado fué la remoción del tejido exofítico, con margen de seguridad del mismo debido al pequeño tamaño y su base pediculada. Dicho material fué remitido a la Cátedra de Anatomía Patológica de la Facultad de Odontología de la Universidad de Buenos Aires y su diagnóstico histopatológicos, morfológico e inmunohistoquímicos comprobaron la compatibilidad de linfangioma. A los 18 meses de seguimiento post operatorio la paciente no muestra signos evidentes de recidiva o asociados a la patología diagnosticada.

Os Linfangiomas são neoplasias benignas que acontecem geralmente na infância, são muito frequentes, e se originam no sistema linfático. Quando ocorre na cavidade oral, a localização mais comum é no dorso da língua, seguida pelos lábios, mucosa bucal, palato mole e o assoalho da boca. A prevalência é de 1 a 3 /10.000 nascidos vivos, afetando ambos gêneros igualmente. Cerca 75% acometem região de cabeça e pescoço, seguida pelo tronco, abdômen e membros. Nesta publicação, vamos apresentar uma situação de um paciente do sexo feminino de menos de 24 horas de vida proveniente do Serviço de Neonatologia H.I.G.A. Pte. Peron, onde se decidiu fazer a exérese da lesão. O objetivo do tratamento foi a remoção do tecido exofítico, com margem de segurança, devido ao tamanho pequeno e sua base pediculada. O material foi enviado à Cadeira de Anatomia Patológica da Faculdade de Odontologia da Universidade de Buenos Aires e seu diagnóstico histopatológico, morfológico e imunohistoquímico confirmou a compatibilidade com linfangioma. Aos 18 meses de seguimento pós-operatório, o paciente não apresentou sinais evidentes de recidiva ou associados à patologia diagnosticada.

Lymphangiomas are benign neoplasms that appear preferentially in childhood, are very uncommon, and have their origin in the lymphatic system. When they occur in the oral cavity, the most frequent location is the back of the tongue, followed by lips, buccal mucosa, soft palate and floor of the mouth. Prevalence is 1­3/10,000 live births, equally affecting both genders, with 75% involving the head and neck region followed by trunk, abdomen, and extremities. In this publication we present the case of a female patient less than 24 hours of life that remained in the Service of Neonatology Service of H.I.G.A Pte. Perón. According to the clinical evaluation of the Dentistry Service it was decided to perform the excisional biopsy of the pathology. The aim of the treatment was to remove of the exophytic tissue, with safety margin due to the small size and pediculated base. This material was sent to the Chair of Pathological Anatomy of the Odontology Faculty of the University de Buenos Aires and his histopathological, morphological and immunohistochemical diagnosis proved the compatibility of lymphangioma. At the 18 months post-operative follow-up, the patient did not show obvious signs of relapse or othe complications associated with the diagnosed pathology.

The lateral intercostal artery perforator as an alternative donor vessel for free vascularized lymph node transplantation

Chronic lymphedema is caused by an impairment of the lymphatic system due to primary or secondary causes. Vascularized lymph node transplantation (VLNT) is currently the most promising and frequently used technique besides lymphaticovenous anastomosis. However, the vessel anatomy in the lateral thoracic region is sometimes quite variable. Based on our experiences with vascular anatomical inconstancy in the lateral thoracic region, we planned a lateral intercostal artery perforator flap for VLNT in a female patient with chronic stage II lymphedema of both legs after cervical cancer treatment. After surgery, the patient reported significant improvement in limb volume and the accompanying symptoms. The limb circumference was reduced by an average of 19.2% at 6 months postoperatively. Despite having a short pedicle and small vessel caliber, the lateral intercostal artery perforator flap can safely be used for VLNT in lymphedema patients with anatomical variants.