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1.
J Nippon Med Sch ; 90(3): 288-293, 2023 Jun 29.
Artigo em Inglês | MEDLINE | ID: mdl-35082215

RESUMO

Many previous reviews of the literature have described the grafts and techniques for management of defects in the upper arm. However, the alternatives are limited in cases where some conventional flaps are not available and the nearby donor vessels have been previously sacrificed for free flaps. A 77-year-old man presented with a tumor in the right upper arm just above the axilla. The patient had already undergone surgeries for three recurrences of low-grade myxofibrosarcoma, the primary site of which was around the right scapula. The pectoralis major musculocutaneous flap was used for the defect caused by tumor resection, since there was no other available option. An acceptable result was obtained without any major complications. Thus, the pectoralis major myocutaneous flap may be a candidate for reconstruction of defects in the proximal part of the upper arm.


Assuntos
Braço , Retalho Miocutâneo , Masculino , Humanos , Adulto , Idoso , Músculos Peitorais/cirurgia
2.
J Plast Reconstr Aesthet Surg ; 75(6): e1-e6, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35140042

RESUMO

The aim of this study was to retrospectively estimate intervention outcomes and to establish suitable indications for autogenous tiered cartilage augmentation (ATCA) of the posterior pharyngeal wall for velopharyngeal insufficiency (VPI). The sample cohort comprised 17 consecutive patients with VPI (10 boys, 7 girls), excluding syndromic cases. Pre- and postoperative findings were comprehensively evaluated using a combination of speech assessment and lateral pharyngography (LPG). Hypernasality and consonant distortion were scored (normal: 0; mild: 1; moderate: 2; severe: 3). Velopharyngeal gap size at rest (AC) and at maximum closure (BC) were measured on LPG. All patients displayed improvements in velopharyngeal function and speech score, and no patients required re-operation. Pre- and postoperative hypernasality scores were 1.9 ± 0.5 and 0.6 ± 0.5, respectively (P < .001). Pre- and postoperative consonant distortion scores were 1.9 ± 0.6 and 0.6 ± 0.5, respectively (P < .001). Pre- and postoperative AC distances were 8.2 ± 3.4 mm and 5.9 ± 2.6 mm, respectively (P < .001). Pre- and postoperative BC distances were 3.9 ± 2.4 mm and 0.3 ± 0.8 mm, respectively (P < .001). Conclusions: ATCA appears effective for surgical treatment of VPI patients with a gap less than 10 mm.


Assuntos
Fissura Palatina , Cartilagem Costal , Insuficiência Velofaríngea , Fissura Palatina/cirurgia , Feminino , Humanos , Masculino , Faringe/cirurgia , Estudos Retrospectivos , Resultado do Tratamento , Insuficiência Velofaríngea/cirurgia
3.
J Plast Reconstr Aesthet Surg ; 75(6): 1931-1936, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35181246

RESUMO

Furlow double-opposing Z-plasty (FDOZ) as primary palatoplasty for the bilateral cleft lip and palate (BCLP) closure often leads to a palatal fistula formation in cases with wide clefts. We examined the utility of the calculated maximum closable cleft width to determine the feasibility of a direct palatal closure without lateral incisions. In this retrospective study, we analyzed consecutive patients with a BCLP who were treated for 5 years from 2009. In sixty-three BCLP patients, the following dimensions were measured preoperatively: an actual distance between maxillary tuberosities (Actual X); actual cleft height, calculated from the line joining the maxillary tuberosities to the cleft edge (Actual Y); and actual cleft width at the hard-soft palate junction (Actual Z) and calculated maximum cleft width requiring a direct closure (CMZ). Six months postoperatively, the relationships between the fistula occurrence and actual Z/CMZ were examined. Median values (interquartile range) of Actual X, Y, and Z and CMZ were 35.0 (33.0-39.0) mm, 7.0 (6.0-8.0) mm, 10.0 (8.0-11.0) mm, and 4.6 (2.7-5.7) mm, respectively. The median age at operation was 8.0 (7.0-17.0) months. Fistulae at the hard-soft palate junction developed postoperatively in three cases with more than a 10-mm cleft width (4.76%). A receiver operating characteristic (ROC) curve analysis indicated that actual Z was a better predictor of a postoperative fistula formation than CMZ. An actual cleft width was a better predictor of the fistula occurrence than a calculated maximum cleft width after FDOZ for a BCLP repair. The low fistula rate of FDOZ suggested that FDOZ could be used to close the palate with less than a 10-mm cleft width.


Assuntos
Fenda Labial , Fissura Palatina , Fístula , Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Humanos , Lactente , Palato Duro , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos
4.
Lymphat Res Biol ; 20(2): 144-152, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34415778

RESUMO

Background: In patients with secondary upper limb lymphedema, positive correlations have been observed between the dermal back flow (DBF) type and visualization of lymph nodes around the clavicle, between the former and the lymph flow pathway type, and between the latter and the visualization of lymph nodes around the clavicle when using single photon-emission computed tomography/computed tomography/lymphoscintigraphy (SPECT-CT LSG). Methods and Results: We analyzed the associations between the visualization of inguinal lymph nodes, the lymph flow pathway type, and the DBF type using SPECT-CT LSG in 81 patients with unilateral secondary lower limb lymphedema by statistical analysis using Fisher's exact test. We revealed that the lymph flow pathways in the lower limb can be classified into nine types because the type in the lower leg is not always equal to the type in the thigh. Associations were observed between the visualization of inguinal lymph nodes and types of DBF (p < 0.01), between the types of lymph flow pathway in the thighs and visualization of the inguinal lymph nodes (p = 0.02), and between the lymph flow pathway types in the thighs and lower legs (p < 0.01). Conclusion: Detriment to the superficial lymph flow pathways in the lower limb appears to usually start from the proximal side, and deep pathways are considered to become dominant from a compensatory perspective as lymphedema severity increases.


Assuntos
Linfedema , Linfocintigrafia , Humanos , Extremidade Inferior/diagnóstico por imagem , Extremidade Inferior/patologia , Sistema Linfático/diagnóstico por imagem , Sistema Linfático/patologia , Linfedema/diagnóstico por imagem , Linfedema/etiologia , Linfedema/patologia , Tomografia Computadorizada com Tomografia Computadorizada de Emissão de Fóton Único/efeitos adversos
5.
J Vasc Surg Venous Lymphat Disord ; 10(3): 728-737.e3, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-34592477

RESUMO

OBJECTIVE: Indocyanine green (ICG) fluorescent lymphography might be useful for assessing patients undergoing lymphatic surgery for secondary lymphedema. The present clinical trial aimed to confirm whether ICG fluorescent lymphography would be useful in evaluating lymphedema, identifying lymphatic vessels suitable for anastomosis, and confirming patency of lymphaticovenular anastomosis in patients with secondary lymphedema. METHODS: The present phase III, multicenter, single-arm, open-label, clinical trial (HAMAMATSU-ICG study) investigated the accuracy of lymphedema diagnosis via ICG fluorescent lymphography compared with lymphoscintigraphy, rate of identification of lymphatic vessels at the incision site, and efficacy for confirming patency of lymphaticovenular anastomosis. The external diameter of the identified lymphatic vessels and the distance from the skin surface to the lymphatic vessels using preoperative ICG fluorescent lymphography were measured intraoperatively under surgical microscopy. RESULTS: When the clinical decision for surgery at each research site was made, the standard diagnosis of lymphedema was considered correct. For the 26 upper extremities, a central judgment committee who was unaware of the clinical presentation confirmed the imaging diagnosis was accurate for 100.0% of cases, whether the assessments had been performed via lymphoscintigraphy or ICG lymphography. In contrast, for the 88 lower extremities, the accuracy of the diagnosis compared with the diagnosis by the central judgment committee was 70.5% and 88.2% for lymphoscintigraphy and ICG lymphography, respectively. The external diameter of the identified lymphatic vessels was significantly greater in the lower extremities than in the upper extremities (0.54 ± 0.21 mm vs 0.42 ± 0.14 mm; P < .0001). Also, the distance from the skin surface to the lymphatic vessels was significantly longer in the lower extremities than in the upper extremities (5.8 ± 3.5 mm vs 4.4 ± 2.6 mm; P = .01). For 263 skin incisions, with the site placement determined using ICG fluorescent lymphography, the rate of identification of lymphatics vessels suitable for anastomosis was 97.7% (95% confidence interval, 95.1%-99.2%). A total of 267 lymphaticovenular anastomoses were performed. ICG fluorescent lymphography was judged as "useful" for confirming patency after the anastomosis in 95.1% of the cases. CONCLUSIONS: ICG fluorescent lymphography could be useful for improving the treatment of patients with secondary lymphedema from the outpatient setting to surgery.


Assuntos
Vasos Linfáticos , Linfedema , Corantes , Humanos , Verde de Indocianina , Vasos Linfáticos/diagnóstico por imagem , Vasos Linfáticos/cirurgia , Linfedema/diagnóstico por imagem , Linfedema/etiologia , Linfedema/cirurgia , Linfografia/métodos , Microcirurgia/métodos
6.
Oncogenesis ; 10(4): 33, 2021 Apr 17.
Artigo em Inglês | MEDLINE | ID: mdl-33866327

RESUMO

Genetically engineered mice (GEM) are the gold standard for cancer modeling. However, strict recapitulation of stepwise carcinogenesis from a single tumor-initiating epithelial cell among genetically intact cells in adults is not feasible with the currently available techniques using GEM. In previous studies, we partially overcame this challenge by physically isolating organs from adult animals, followed by genetic engineering in organoids and subcutaneous inoculation in nude mice. Despite the establishment of suitable ex vivo carcinogenesis models for diverse tissues, tumor development remained ectopic and occurred under immunodeficient conditions. Further refinement was, therefore, necessary to establish ideal models. Given the poor prognosis and few models owing to the lack of gall bladder (GB)-specific Cre strain, we assumed that the development of authentic models would considerably benefit GB cancer research. Here, we established a novel model using GB organoids with mutant Kras and Trp53 loss generated in vitro by lentiviral Cre transduction and CRISPR/Cas9 gene editing, respectively. Organoid-derived subcutaneous tumor fragments were sutured to the outer surface of the GB in syngeneic mice, which developed orthotopic tumors that resembled human GB cancer in histological and transcriptional features. This model revealed the infiltration of similar subsets of immune cells in both subcutaneous and orthotopic tumors, confirming the appropriate immune environment during carcinogenesis. In addition, we accurately validated the in vivo efficacy of gemcitabine, a common therapeutic agent for GB cancer, in large cohorts. Taken together, this model may serve as a promising avatar of patients with GB cancer in drug discovery and precision medicine.

7.
J Med Case Rep ; 15(1): 99, 2021 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-33648548

RESUMO

BACKGROUND: Dermoid cysts are well-known lesions that manifest as subcutaneous tumors around the lateral sides of the eyebrows in young patients. Computed tomography or magnetic resonance imaging (MRI) is often performed to confirm the diagnosis. On the other hand, a lipoma is usually a circular lesion, which is sometimes observed in the upper part of the face. The signals of both T1-weighted and T2-weighted images of MRI of a lipoma are, in general, relatively highly homogenous, and the signals decrease in fat-suppressed images. Therefore, differential diagnosis between a dermoid cyst and a lipoma is usually made with MRI, especially based on fat-suppressed images. Here, we present a case of misdiagnosis of a dermoid cyst as a lipoma because of atypical magnetic resonance images. CASE PRESENTATION: We report a case of a 24-year-old Japanese woman with a dermoid cyst around the lateral edge of the eyebrow. The cyst had been gradually increasing in size for the past 2 years. On MRI, it showed high internal signals on T1- and T2-weighted images. However, the signal intensity decreased homogeneously in the fat-suppressed T2-weighted images. The observed tumor had a yellowish appearance under the endoscope. On the basis of these findings, the lesion was considered a lipoma until it ruptured intraoperatively. The pathological diagnosis confirmed it to be a dermoid cyst. CONCLUSION: Some dermoid cysts contain lipid-rich liquid, and these may be misdiagnosed as lipomas by MRI. When a tumor is located at a common site for a dermoid cyst, the MRI images should be validated carefully if it appears like a lipoma, and the differential diagnosis should be considered carefully.


Assuntos
Cisto Dermoide/diagnóstico por imagem , Cisto Dermoide/diagnóstico , Cisto Dermoide/patologia , Diagnóstico Diferencial , Erros de Diagnóstico , Feminino , Humanos , Lipoma/diagnóstico , Lipoma/diagnóstico por imagem , Imageamento por Ressonância Magnética , Adulto Jovem
8.
Plast Reconstr Surg Glob Open ; 8(11): e3238, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33299704

RESUMO

This article reports an intraoral approach for a congenital mature teratoma in the orbit, extending into the pterygopalatine fossa and the zygoma remodeling due to biological and functional matrix theory during the neonatal period. The operation took place on the 56th postnatal day due to gradual proptosis of the left eye from the socket. The entire orbital tumor could be surgically removed via the inferior orbital fissure, which had been expanded by the pressure of the tumor. This case suggests that orbital tumors expanding into pterygopalatine fossa can be removed by the intraoral approach because the bone of infants is so soft. The eyeball of the patient was temporarily depressed after the operation, but that was improved by tissue remodeling with time. Therefore, it is recommended that reconstructive surgery for an infant should be performed at the age of 12 months or older.

9.
Int J Mol Sci ; 21(22)2020 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-33187369

RESUMO

Microtia is a congenital aplasia of the auricular cartilage. Conventionally, autologous costal cartilage grafts are collected and shaped for transplantation. However, in this method, excessive invasion occurs due to limitations in the costal cartilage collection. Due to deformation over time after transplantation of the shaped graft, problems with long-term morphological maintenance exist. Additionally, the lack of elasticity with costal cartilage grafts is worth mentioning, as costal cartilage is a type of hyaline cartilage. Medical plastic materials have been transplanted as alternatives to costal cartilage, but transplant rejection and deformation over time are inevitable. It is imperative to create tissues for transplantation using cells of biological origin. Hence, cartilage tissues were developed using a biodegradable scaffold material. However, such materials suffer from transplant rejection and biodegradation, causing the transplanted cartilage tissue to deform due to a lack of elasticity. To address this problem, we established a method for creating elastic cartilage tissue for transplantation with autologous cells without using scaffold materials. Chondrocyte progenitor cells were collected from perichondrial tissue of the ear cartilage. By using a multilayer culture and a three-dimensional rotating suspension culture vessel system, we succeeded in creating scaffold-free elastic cartilage from cartilage progenitor cells.


Assuntos
Cartilagem Costal/citologia , Cartilagem da Orelha/citologia , Cartilagem Elástica/citologia , Animais , Células Cultivadas , Condrócitos/citologia , Feminino , Humanos , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Células-Tronco/citologia , Engenharia Tecidual/métodos , Alicerces Teciduais/química
10.
Contemp Clin Trials Commun ; 19: 100595, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32617434

RESUMO

INTRODUCTION: Secondary lymphoedema of the extremities is an important quality-of-life issue for patients who were treated for their malignancies. Indocyanine green (ICG) fluorescent lymphography may be helpful for assessing lymphoedema and for planning lymphaticovenular anastomosis (LVA). The objective of the present clinical trial is to confirm whether or not ICG fluorescent lymphography using the near-infrared monitoring camera is useful for assessing the indication for LVA, for the identification of the lymphatic vessels before the conduct of LVA, and for the confirmation of the patency of the anastomosis site during surgery. METHODS AND ANALYSIS: This trial is a phase III, multicentre, single-arm, open-label clinical trial to assess the efficacy and safety of ICG fluorescent lymphography when assessing and treating lymphoedema of patients with secondary lymphoedema who are under consideration for LVA. The primary endpoint is the identification rate of the lymphatic vessels at the incision site based on ICG fluorescent lymphograms obtained before surgery. The secondary endpoints are 1) the sensitivity and specificity of dermal back flow determined by ICG fluorescent lymphography as compared with 99mTc lymphoscintigraphy-one of the standard diagnostic methods and 2) the usefulness of ICG fluorescent lymphography when confirming the patency of the anastomosis site after LVA. ETHICS AND DISSEMINATION: The protocol for the study was approved by the Institutional Review Board of each institution. The trial was filed for and registered at the Pharmaceuticals and Medical Devices Agency in Japan. The trial is currently on-going and is scheduled to end in June 2020. TRIAL REGISTRATION NUMBER: jRCT2031190064; Pre-results.

11.
BMC Surg ; 20(1): 106, 2020 May 18.
Artigo em Inglês | MEDLINE | ID: mdl-32423401

RESUMO

BACKGROUND: A large plexiform neurofibroma in patients with neurofibromatosis type I can be life threatening due to possible massive bleeding within the lesion. Although the literature includes many reports that describe the plexiform neurofibroma size and weight or strategies for their surgical treatment, few have discussed their possible physical or mental benefits, such as reducing cardiac stress. In addition, resection of these large tumors can result in impaired wound healing, partly due to massive blood loss during surgery. CASE PRESENTATION: A 24-year-old man was diagnosed with neurofibromatosis type I and burdened with a large plexiform neurofibroma on the buttocks and upper posterior thighs. The patient was 159 cm in height and 70.0 kg in weight at the first visit. Cardiac overload was indicated by an echocardiography before surgery. His cardiac output was 5.2 L/min with mild tricuspid regurgitation. After embolism of the arteries feeding the tumor, the patient underwent surgery to remove the neurofibroma, followed by skin grafting. Follow-up echocardiography, performed 6 months after the final surgery, indicated a decreased cardiac output (3.6 L/min) with improvement of tricuspid regurgitation. Because the blood loss during the first surgery was over 3.8 L, malnutrition with albuminemia was induced and half of the skin graft did not attach. Nutritional support to improve the albuminemia produced better results following a second surgery to repair the skin wound. CONCLUSION: Cardiac overload may be latent in patients with neurofibromatosis type I with large plexiform neurofibromas. As in pregnancy, the body may compensate for this burden. In these patients, one stage total excision may improve quality of life and reduce cardiac overload. In addition, nutritional support is likely needed following a major surgery that results in either an extensive skin wound or excessive blood loss during treatment.


Assuntos
Nádegas/cirurgia , Débito Cardíaco Elevado/fisiopatologia , Neoplasias Primárias Múltiplas/cirurgia , Neurofibroma Plexiforme/fisiopatologia , Neurofibroma Plexiforme/cirurgia , Neurofibromatose 1/fisiopatologia , Coxa da Perna/cirurgia , Débito Cardíaco Elevado/complicações , Humanos , Masculino , Neoplasias Primárias Múltiplas/fisiopatologia , Qualidade de Vida , Transplante de Pele , Adulto Jovem
12.
J Craniofac Surg ; 31(1): 77-78, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31449225

RESUMO

Infantile immature teratoma located in the nasopharynx is a rare congenital tumor that is not easily removed. Three surgeries and chemotherapy for recurrence of the tumor have been performed since a male infant with a nasopharyngeal mass was born at a gestational age of 35 weeks. Extended maxillotomy combining Le Fort I osteotomy with midline palatal split was performed at 2 years and 6 months of age. Residual tumor left in the intracranial region had not increased as of 4 years of age. Careful follow-up is needed until the patient reaches adulthood.


Assuntos
Neoplasias Nasofaríngeas/cirurgia , Teratoma/cirurgia , Pré-Escolar , Humanos , Masculino , Neoplasias Nasofaríngeas/diagnóstico por imagem , Osteotomia , Teratoma/diagnóstico por imagem
13.
Sci Rep ; 9(1): 8499, 2019 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-31186436

RESUMO

Secondary upper limb lymphoedema is usually caused by lymphatic system dysfunction. Diagnosis is primarily based on clinical features. However, there are no distinct diagnostic criteria for lymphoedema. Although conventional lymphoscintigraphy is a useful technique to diagnose the severity of lymphoedema, the resultant data are two-dimensional. In this study, we examined the pathology of lymphoedema using single photon emission computed tomography-computed tomography lymphoscintigraphy (SPECT-CT LSG), a new technique that provides 3-dimensional information on lymph flow. We observed lymph flow pathways in the subcutaneous and muscle layers of the upper limbs. A significant positive correlation was found between the dermal back flow (DBF) type and the visualization of lymph nodes around the clavicle (p = 0.000266), the type of lymph flow pathways and the visualization of lymph nodes around the clavicle (p = 0.00963), and the DBF type and the lymph flow pathway (p = 0.00766). As the severity of lymphoedema increased, the DBF appeared more distally in the upper limb and the flow into the lymph nodes around the clavicle decreased, whereas the lymph flow pathways in the muscle layer became dominant. These findings demonstrate the features of lymphoedema pathology and the functional anatomy and physiology of the lymphatic system without the need for cadaver dissection.


Assuntos
Sistema Linfático/patologia , Linfedema/patologia , Extremidade Superior/patologia , Adulto , Idoso , Clavícula/patologia , Feminino , Humanos , Linfa/metabolismo , Linfonodos/patologia , Masculino , Pessoa de Meia-Idade
14.
J Craniofac Surg ; 30(1): 53-56, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30444777

RESUMO

INTRODUCTION: Treatment of patients with severe Pfeiffer syndrome types II and III is difficult. The purpose of this article is to present our method of overcorrecting midface advancement to improve airway problems in such patients. MATERIALS AND METHODS: One boy and two girls with types II and III Pfeiffer syndrome and who underwent Le Fort III midface advancement using our previously described corrected cephalometric analysis and distraction system were included in the study. RESULTS: The authors overcorrected by advancing the midface to make it look as similar as possible to an adult face. While the overcorrected midface advancement widened the upper airway spaces in the 3 patients, the tracheostomy that had already been placed during infancy could not be closed, probably because of an underlying tracheal abnormality or tracheomalacia. DISCUSSION: Overcorrected midface advancement cannot enable tracheostomy closure, probably because of severe tracheal anomalies, such as tracheomalacia, below the tracheostomy. However, with the possibility of gradual improvement of the tracheomalacia with age, closure of the tracheostomy can eventually be expected. Therefore, efforts to close a tracheostomy should be pursued even if the probability of its removal is low. CONCLUSION: Overcorrected midface advancement did not enable tracheostomy closure, probably because of severe tracheal anomalies such as tracheomalacia. However, the severe exophthalmos and angle III malocclusion were improved, and with the possibility of gradual improvement of the tracheomalacia with age, closure of the tracheostomy can eventually be expected. Therefore, efforts to close a tracheostomy should be pursued even if the probability of its removal is low.


Assuntos
Acrocefalossindactilia/complicações , Acrocefalossindactilia/cirurgia , Osteogênese por Distração/métodos , Osteotomia de Le Fort/métodos , Cefalometria , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Nariz/cirurgia , Tomografia Computadorizada por Raios X , Traqueostomia , Resultado do Tratamento
15.
J Foot Ankle Surg ; 57(4): 816-820, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29605553

RESUMO

The distally based sural flap is regarded as the first choice for reconstruction in the distal part of the lower leg because the flap is easy to raise, reliable in its blood supply, and prone to only a few complications. Limited data have investigated the details of treatment in cases of failure of distally based sural flaps. We report a case of calcaneal osteomyelitis in which a successful outcome was finally obtained with a partially necrosed, distally based sural flap using negative pressure wound therapy with basic fibroblast growth factor spray. The 2-year follow-up examination was uneventful. Moreover, the patient was able to walk freely with an ankle-foot orthosis in her house. This technique can be considered as a useful and effective option to recover unfavorable results of distally based sural flaps.


Assuntos
Fármacos Cardiovasculares/uso terapêutico , Fatores de Crescimento de Fibroblastos/uso terapêutico , Tratamento de Ferimentos com Pressão Negativa , Osteomielite/cirurgia , Fragmentos de Peptídeos/uso terapêutico , Procedimentos de Cirurgia Plástica , Retalhos Cirúrgicos , Idoso de 80 Anos ou mais , Calcâneo , Feminino , Humanos , Necrose
16.
BMC Surg ; 17(1): 101, 2017 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-28915833

RESUMO

BACKGROUND: We present the cases of 2 patients with invasive thyroid cancer, who underwent reconstructive surgery using a deltopectoral flap. Although the overall rate of extrathyroidal extension in patients with thyroid cancer is quite low, skin invasion is the most common pattern observed. Reconstructive surgery, involving local skin flaps, is required in these patients. The deltopectoral flap relies on the blood supply from intercostal perforators of the internal thoracic artery and usually requires skin grafting to the donor site. The internal thoracic artery is rarely sacrificed in these cases, even in an advanced surgery such as in patients with invasive thyroid cancer. CASE PRESENTATION: A 55-year-old man with a distended thyroid gland presented to our hospital. He underwent advanced surgery, including skin excision, because we suspected that his tumor was thyroid cancer. The defect was covered with an ipsilateral deltopectoral flap via transposition of the flap, without skin grafting. In the second case, a 67-year-old woman with thyroid cancer that metastasized to her neck lymph nodes presented to our institution. Although the ipsilateral internal thoracic artery was sacrificed near its origin during tumor resection, the deltopectoral flap was raised in the usual manner without any complications. The skin defect caused by the tumor resection was covered with the flap. The patient had an uneventful clinical course for more than 2 years of follow-up. These 2 cases show the effectiveness of using the deltopectoral flap as a reconstructive option for patients with thyroid cancer who underwent radical surgery, resulting in a skin defect. The first case shows that this flap does not always require skin grafting to the donor site. To our knowledge, the second case may be the first report of a deltopectoral flap that was safely raised and applied with resection of the bifurcation of the ipsilateral internal thoracic artery. CONCLUSIONS: Although thyroid cancer surgery with surrounding skin excision is a rare procedure, we found that the deltopectoral flap was useful and should be the first choice for patients undergoing reconstructive surgery, whether the bifurcation of the ipsilateral internal thoracic artery is sacrificed.


Assuntos
Procedimentos de Cirurgia Plástica/métodos , Retalhos Cirúrgicos , Neoplasias da Glândula Tireoide/cirurgia , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pescoço , Transplante de Pele
17.
Cell Transplant ; 25(5): 951-62, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26884211

RESUMO

We recently developed a promising regenerative method based on the xenotransplantation of human cartilage progenitor cells, demonstrating self-renewing elastic cartilage reconstruction with expected long-term tissue restoration. However, it remains unclear whether autotransplantation of cartilage progenitors may work by a similar principle in immunocompetent individuals. We used a nonhuman primate (monkey) model to assess the safety and efficacy of our regenerative approach because the model shares characteristics with humans in terms of biological functions, including anatomical features. First, we identified the expandable and multipotent progenitor population from monkey ear perichondrium and succeeded in inducing chondrocyte differentiation in vitro. Second, in vivo transplanted progenitor cells were capable of reconstructing elastic cartilage by xenotransplantation into an immunodeficient mouse. Finally, the autologous monkey progenitor cells were transplanted into the subcutaneous region of a craniofacial section and developed mature elastic cartilage of their own 3 months after transplantation. Furthermore, we attempted to develop a clinically relevant, noninvasive monitoring method using magnetic resonance imaging (MRI). Collectively, this report shows that the autologous transplantation of cartilage progenitors is potentially effective for reconstructing elastic cartilage. This principle will be invaluable for repairing craniofacial injuries and abnormalities in the context of plastic and reconstructive surgery.


Assuntos
Terapia Baseada em Transplante de Células e Tecidos/métodos , Condrócitos/citologia , Condrogênese/fisiologia , Cartilagem da Orelha/citologia , Transplante de Células-Tronco/métodos , Engenharia Tecidual/métodos , Animais , Células Cultivadas , Feminino , Humanos , Macaca fascicularis , Imageamento por Ressonância Magnética , Masculino , Camundongos , Procedimentos de Cirurgia Plástica , Regeneração/fisiologia , Células-Tronco , Transplante Autólogo
18.
Stem Cells ; 32(3): 816-21, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24038678

RESUMO

In healthy joints, hyaline cartilage covering the joint surfaces of bones provides cushioning due to its unique mechanical properties. However, because of its limited regenerative capacity, age- and sports-related injuries to this tissue may lead to degenerative arthropathies, prompting researchers to investigate a variety of cell sources. We recently succeeded in isolating human cartilage progenitor cells from ear elastic cartilage. Human cartilage progenitor cells have high chondrogenic and proliferative potential to form elastic cartilage with long-term tissue maintenance. However, it is unknown whether ear-derived cartilage progenitor cells can be used to reconstruct hyaline cartilage, which has different mechanical and histological properties from elastic cartilage. In our efforts to develop foundational technologies for joint hyaline cartilage repair and reconstruction, we conducted this study to obtain an answer to this question. We created an experimental canine model of knee joint cartilage damage, transplanted ear-derived autologous cartilage progenitor cells. The reconstructed cartilage was rich in proteoglycans and showed unique histological characteristics similar to joint hyaline cartilage. In addition, mechanical properties of the reconstructed tissues were higher than those of ear cartilage and equal to those of joint hyaline cartilage. This study suggested that joint hyaline cartilage was reconstructed from ear-derived cartilage progenitor cells. It also demonstrated that ear-derived cartilage progenitor cells, which can be harvested by a minimally invasive method, would be useful for reconstructing joint hyaline cartilage in patients with degenerative arthropathies.


Assuntos
Orelha/anatomia & histologia , Cartilagem Elástica/citologia , Cartilagem Hialina/patologia , Articulações/patologia , Medicina Regenerativa , Transplante de Células-Tronco , Células-Tronco/citologia , Animais , Separação Celular , Células Clonais , Cães , Humanos , Transplante Autólogo
19.
Br J Oral Maxillofac Surg ; 51(7): e165-8, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22853979

RESUMO

Treatment of fracture of the naso-orbitoethmoid (NOE) complex is difficult. There are not only aesthetic issues but also functional consequences related to the lacrimal system. Because prophylactic lacrimal intubation for such fractures remains controversial, we have assessed the effectiveness of intraoperative lacrimal intubation to prevent epiphora as a result of such injuries. Thirteen patients diagnosed with craniomaxillofacial fractures including fractures of the NOE complex were included in the study; 10 had unilateral fractures and 3 bilateral. Computed tomography (CT) showed all patients had displaced fragments that had the potential to damage the lacrimal duct. In 7 patients the fractures included the canthal region and in 6 they did not. All patients were treated by open reduction and internal fixation under general anaesthesia, followed by intraoperative lacrimal intubation unilaterally or bilaterally as required. Lacrimal intubation with a silicone tube was successful in all 13 patients (16 sides). The tube was removed 2-9 months (mean 3.8) postoperatively and no subsequent epiphora were seen during follow-up (mean (3-29 months) 11.3 months). Lacrimal intubation for at least 2 months may prevent epiphora caused by injury to the nasolacrimal system after fractures of the NOE complex.


Assuntos
Osso Etmoide/cirurgia , Complicações Intraoperatórias/prevenção & controle , Intubação/métodos , Doenças do Aparelho Lacrimal/prevenção & controle , Osso Nasal/cirurgia , Ducto Nasolacrimal/lesões , Fraturas Orbitárias/cirurgia , Adolescente , Adulto , Osso Etmoide/lesões , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Osso Nasal/lesões , Ducto Nasolacrimal/cirurgia , Tomografia Computadorizada por Raios X , Resultado do Tratamento
20.
Aesthet Surg J ; 32(4): 441-6, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22523097

RESUMO

BACKGROUND: For patients with senile ptosis, aesthetic blepharoplasty can be combined with ptosis surgery. However, the amount of skin excision necessary in blepharoplasty is not clearly defined by measurements of the upper eyelids. OBJECTIVES: The authors preoperatively evaluate the amount of skin to be excised in blepharoplasty. METHODS: Fifty patients with bilateral senile ptosis were included in this study. The amount of skin to be excised from the upper eyelids was selected based on preoperative measurements of redundant skin, equivalent to the maximum lid height (MLH) while manually stretching the eyelid upwards minus resting lid height (RLH) with the eyes closed passively. Ptosis surgery (such as plication of the aponeurosis) followed blepharoplasty. RESULTS: Preoperatively, mean MLH was 35 mm on the right and 36 mm on the left. Mean RLH was 25 mm bilaterally. The mean amount (height) of excised skin was 10 mm on the right and 11 mm on the left. At six months postoperatively, mean MLH and RLH were 29 and 23 mm on both sides, respectively. Significant differences between pre- and postoperative MLH and RDH were seen on both sides (P<.001). No complications due to overexcision were observed, but revision was performed for two patients with asymmetry of the lid folds and five patients with recurrence of drooping. CONCLUSIONS: Preoperative measurements of upper eyelid heights (stretched and at rest) appear useful in determining the amount of skin excision required in blepharoplasty for senile ptosis. LEVEL OF EVIDENCE: 4.


Assuntos
Blefaroplastia/métodos , Blefaroptose/cirurgia , Procedimentos Cirúrgicos Dermatológicos , Idoso , Idoso de 80 Anos ou mais , Pálpebras/anatomia & histologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
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