Fratura de mandíbula: análise de 50 casos cirúrgicos em um hospital escola / Jaw fracture: analysis of 50 surgical cases in a teaching hospital

Introdução: A mandíbula é o maior e mais forte dos ossos da face. Em razão de sua topografia, apresenta vulnerabilidade nos traumas. A análise de dados sobre as fraturas de mandíbula se mostram fundamentais para auxiliar no tratamento e em políticas de saúde pública. O objetivo desse estudo é realizar um levantamento epidemiológico de fraturas mandibulares tratadas cirurgicamente. Método: Triagem através do sistema de informação hospitalar, buscando pacientes submetidos a cirurgia para fratura de mandíbula realizadas em um hospital escola pela equipe de cirurgia plástica, em Campinas-SP, de abril de 2015 a abril de 2020. Foram, então, coletados dados por meio da análise de prontuários. Resultados: Foram incluídos 50 pacientes, sendo 90% do sexo masculino. A média de idade foi 30,7 anos. A etiologia predominante foi acidente automotivo e a região mais fraturada na mandíbula foi a parassínfise. A mediana de tempo entre o trauma e cirurgia foi de 19 dias. Onze (22%) pacientes apresentavam alguma comorbidade. Quatorze pacientes (28%) foram internados em Unidade de Terapia Intensiva (UTI) e 42% operaram com outra especialidade além da Cirurgia Plástica. Dez (20%) pacientes apresentaram alguma complicação da cirurgia, sendo a mais comum a deiscência de ferida operatória. Conclusão: Houve predominância entre homens jovens e de acidentes de trânsito como etiologia. As fraturas foram localizadas preferencialmente na região da parassínfise e foram tratadas por meio de fixação interna rígida. Os elevados índices de internação em UTI, lesões associadas e realizações de procedimentos cirúrgicos por outras especialidades evidenciam a gravidade dos pacientes assistidos no serviço.

Introduction: The mandible is the largest and strongest of the bones in the face. Due to its topography, it is vulnerable to trauma. Data analysis on mandible fractures is fundamental for treatment and public health policies. This study aims to conduct an epidemiological survey of surgically treated mandibular fractures. Method: Screening through the hospital information system, seeking patients undergoing surgery for jaw fracture performed at a teaching hospital by the plastic surgery team in Campinas-SP from April 2015 to April 2020. Data were then collected through analysis of medical records. Results: 50 patients were included, 90% male. The average age was 30.7 years. The predominant etiology was an automobile accident, and the most fractured region in the mandible was the parasymphysis. The median time between trauma and surgery was 19 days. Eleven (22%) patients had some comorbidity. Fourteen patients (28%) were admitted to the Intensive Care Unit (ICU), and 42% underwent surgery with another specialty besides Plastic Surgery. Ten (20%) patients had some complication of the surgery, the most common being surgical wound dehiscence. Conclusion: There was a predominance among young men and traffic accidents as etiology. Fractures were preferably located in the parasymphysis region and were treated using rigid internal fixation. The high rates of ICU admission, associated injuries, and surgical procedures carried out by other specialties demonstrate the severity of the patients assisted in the service.

Prevalência de cirurgia de contorno corporal em pacientes pós-bariátricos em um hospital universitário / Prevalence of body contouring surgery in post-bariatric patients at a university hospital

Introdução: O número crescente de pacientes com perda ponderal maciça, após cirurgias bariátricas, correlaciona-se com a procura por cirurgias de contorno corporal. Tais procedimentos reduzem queixas físicas e psicológicas, influenciando positivamente a qualidade de vida dessas pessoas. Todavia, há poucos dados quanto à resposta dos serviços que oferecem tratamento cirúrgico para obesidade mórbida frente a essa necessidade. O estudo tem como objetivo aferir a prevalência de cirurgia do contorno corporal entre 2015 e 2018, em pacientes previamente submetidos à cirurgia bariátrica, nos anos de 2014 e 2015, em um hospital universitário. Métodos: Consulta ao sistema de informação hospitalar e a prontuários médicos a fim de aferir prevalência institucional de cirurgia de contorno corporal pós-bariátrica. Foram excluídos pacientes que não tenham sido submetidos a ambas as cirurgias em nosso Serviço, os que realizaram os referidos procedimentos cirúrgicos em outros anos, bem como aqueles com registros incompletos. Resultados: Foram realizadas cirurgias bariátricas em 208 pacientes. Desses, 11% (n=23) foram submetidos a 27 cirurgias do contorno corporal, sendo a dermolipectomia abdominal (n=16) a mais realizada. A realização de mais de um procedimento para correção de deformidade corporal ocorreu em 13% (n=3) dos pacientes. A média de idade dos pacientes submetidos a cirurgia do contorno corporal foi de 37 anos, a maioria do sexo feminino (96%, n=22). Conclusão: A cirurgia do contorno corporal constitui etapa importante do tratamento da obesidade mórbida e tem caráter reparador. Há imensa carência dessa terapêutica, o que compromete irremediavelmente os resultados obtidos pela cirurgia bariátrica.

Introduction: The growing number of patients with massive weight loss after bariatric surgery is correlated with the demand for body contouring surgery. Such procedures reduce physical and psychological complaints, positively influencing the quality of life of these people. However, there is little data on the response of services that offer surgical treatment for morbid obesity to this need. The study aims to measure the prevalence of body contouring surgery between 2015 and 2018, in patients previously underwent on a bariatric surgery, in 2014 and 2015, at a University Hospital. Methods: Research in the hospital information system and medical records in order to assess the institutional prevalence of post-bariatric body contouring surgery. Patients who did not undergo both surgeries in our Service, those who underwent these surgical procedures in other years, as well as those with incomplete medical records were excluded. Results: Bariatric surgeries were performed in 208 patients. Of these, 11% (n=23) underwent 27 body contouring surgeries, with abdominal dermolipectomy (n=16) being the most frequently performed. The performance of more than one procedure to correct body deformity occurred in 13% (n=3) of patients. The mean age of patients undergoing body contouring surgery was 37 years, the majority was female (96%, n=22). Conclusion: Body contouring surgery is an important step in the treatment of morbid obesity and has a restorative feature. There is a huge lack of this therapy, which irreparably compromises the results obtained by bariatric surgery.

Análise de complicações de lipoenxertias realizadas em hospital público universitário entre 2015 e 2018: estudo retrospectivo transversal / Analysis of complications from fat grafting performed at a public university hospital between 2015 and 2018: a cross-sectional retrospective study

Introdução: A lipoenxertia consiste no processo de coleta de gordura de uma área doadora de gordura por meio de lipoaspiração seguida da realocação desse tecido em área receptora por meio de seringas e cânulas. É um processo seguro utilizado em cirurgias estéticas e reconstrutivas, de acordo com a literatura. O objetivo é avaliar as taxas de complicações dos procedimentos de lipoenxertia realizados em um hospital público universitário no período de 2015 a 2018, em comparação com dados previamente relatados na literatura. Métodos: Estudo observacional retrospectivo desenvolvido em hospital universitário público de Campinas - SP a partir da revisão de prontuários de pacientes submetidos a lipoenxertia nesta instituição de 2015 a 2018. Resultados: Em relação às complicações, a grande maioria correspondeu à reabsorção de gordura (62%). O hematoma correspondeu ao segundo mais comum (38% dos casos), seguido do edema (19%). Dor e discromia vieram em seguida, com 10% e 7% dos casos, respectivamente. Apenas um caso de infecção de ferida operatória foi descrito. Outras complicações menos frequentes foram hiperemia (5%), assimetrias (5%), descamação (2%), parestesia local (3%) e lesão cutânea (2%). Nenhuma outra complicação maior foi relatada, como embolia gordurosa ou complicações cirúrgicas graves como sangramento, sepse, anafilaxia, entre outras. Conclusão: Os procedimentos de lipoaspiração para coleta de gordura e lipoenxertia mostraram-se seguros e com baixo índice de complicações na amostra estudada, concordando com dados da literatura.

Introduction: Fat grafting consists of collecting fat from one fat donor area via liposuction, then reallocating this tissue into a receptor area through syringes and cannulas. According to the literature, it is a safe process used in aesthetic and reconstructive surgeries. The objective is to evaluate complication rates of fat grafting procedures performed in a public university hospital from 2015 to 2018 in comparison with data previously reported in the literature. Methods: A retrospective observational study developed at a public university hospital in Campinas-SP based on the revision of medical records of patients who underwent the fat grafting procedure in this institution from 2015 to 2018. Results: Regarding the complications, the vast majority corresponded to fat reabsorption (62%). Bruise corresponded to the second most common (38% of cases), followed by edema (19%). Pain and dyschromia followed next, with 10% and 7% of cases, respectively. Only one case of operative wound infection was described. Other less frequent complications included hyperemia (5%), asymmetries (5%), desquamation (2%), local paraesthesia (3%) and skin lesion (2%). No other larger complication was reported, such as fat embolism or severe surgical complications such as bleeding, sepsis, or anaphylaxis. Conclusion: The procedures of liposuction for fat collection and fat grafting were proved to be safe, yielding low complication rates in the studied sample, which agrees with data reported in the literature.

Perfil epidemiológico dos pacientes submetidos à cirurgia para tratamento de fratura de face em um hospital universitário / Epidemiological profile of patients undergoing surgery to treat facial fractures in a university hospital

Introdução: Trauma facial apresenta relevância estética, social e econômica. Conhecer sua epidemiologia permite formular medidas de prevenção, educação e sistematização de atendimento. Métodos: Triagem, através do sistema de informação hospitalar, buscando pacientes que necessitaram de cirurgia para fratura de face entre abril de 2015 e abril de 2020. Foram, então, coletados dados epidemiológicos. Resultados: Foram selecionados 141 pacientes. A média de idade foi 34 anos, com maioria do sexo masculino (85%). A etiologia predominante foi acidente com veículo automotor e a fratura cirúrgica mais prevalente foi a de órbita (67%). A mediana de tempo entre o trauma e a cirurgia foi de 18 dias. Sessenta pacientes apresentaram lesões associadas à fratura de face, com destaque para as ortopédicas e neurológicas. Conclusão: A etiologia mais comum de fraturas faciais cirúrgicas foi acidente de trânsito, sendo o sexo masculino mais afetado. As fraturas de órbita foram as mais tratadas cirurgicamente.

Introduction: Facial trauma presents aesthetic, social and economic relevance. Knowing its epidemiology makes it possible to formulate measures for prevention, education and systematization of care. Methods: Research through the hospital information system, looking for patients who needed to undergo surgery for face fracture between April 2015 and April 2020. Epidemiological data were then collected. Results: 141 patients were selected. The average age was 34 years, with most males (85%). The predominant etiology was motor vehicle accidents, and the most prevalent surgical fracture was orbit (67%). The median time between trauma and surgery was 18 days. Sixty patients had injuries associated with facial fractures, especially orthopedic and neurological injuries. Conclusion: The most common etiology of surgical facial fractures was a traffic accident, predominantly among men. Orbit fractures were the most surgically treated.

Effects of the lower energy and pulse stacking in carbon dioxide laser skin treatment: an objective analysis using second harmonic generation.

PURPOSE: To evaluate the effect of fractional carbon dioxide (CO2) laser treatment using lower power associated with pulse stacking within collagen fibers, using second harmonic generation microscopy and computerized image analysis. METHODS: Twenty male Wistar rats aging eight weeks were used. Each treatment area received a single-pass CO2 fractional laser with different parameters. The 20 animals were divided into two groups and euthanized after 30 and 60 days. Second harmonic generation images were obtained and program ImageJ was utilized to evaluate the collagen organization within all areas. Collagen anisotropy, entropy and optical density were quantified. RESULTS: Increased anisotropy over time was observed in all four areas, but only reached statistical significance (p = 0.0305) when the mildest parameters were used (area four). Entropy decreased over time in all areas, but without significance(p = 0.1779) in area four. Density showed an overtime increase only in area four, but no statistical significance was reached (p = 0.6534). CONCLUSIONS: When combined, the results obtained in this study regarding anisotropy, entropy and density tend to demonstrate that it is possible to achieve collagen remodeling with the use of lower power levels associated with stacked pulses.

Biological performance of a bioabsorbable Poly (L-Lactic Acid) produced in polymerization unit: in vivo studies.

Background: The biomaterials engineering goal is to manufacture a biocompatible scaffold that adequately supports or improves tissue regeneration after implantation of the biomaterial in the injured area. Many requirements are demanded for a biomaterial, such as biocompatibility, elasticity, degradation time, and a very important factor is its cost of importation or synthesis, making its application inaccessible to some countries. Studies about biomaterials market show that Polylactic acid (PLLA) is one of the most used polymers, but expensive to produce. It becomes important to prove the biocompatibility of the new PLLA and to find strategies to produce biocompatible biopolymers at an acceptable production cost. Methods: In this work, the polylactic acid biomaterial was synthesized by ring-opening polymerization. The polymer was submitted to initial in vivo biocompatibility studies in 12 New Zealand female rabbits, assigned to two groups: (1) Lesion and PLLA group (n = 6), (2) Lesion No PLLA group (n = 6). Each group was divided into two subgroups at six and nine months post-surgical time. Before euthanasia clinical and biochemical studies were performed and after that tomographic (CT), histological (Hematoxylin and Eosin and Masson's trichrome) and histomorphometric analyses were performed to evaluate the injury site and prove biocompatibility. The final cost of this polymer was analyzed. Results: The statistical studies of hemogram and hepatocyte enzymes, showed that there were no significant differences between the groups for any of the times studied, in any of the variables considered and the results of CT and histology showed that there was an important process of neoregeneration. The cost analysis showed the biopolymer synthesis is between R$3,06 - R$5,49 cheaper than the import cost. Conclusions: It was possible to synthesize the PLLA biopolymer by cyclic ring opening, which proved to be biocompatible, potential osteoregenerative and cheaper than other imported biopolymers.

Comparative clinical evaluation of breast augmentation using silicone foam coated implants and textured implants.

PURPOSE: To evaluate whether silicone foam implants have a different evolution pattern compared to conventional texture implants. METHODS: Fifty-eight female patients underwent surgery. They were divided into two groups (silicone foam - Lifesil® - and microtexturized silicone - Lifesil®). The evolution was analyzed in postoperative consultations, with physical examination, photographic documentation and filling in a satisfaction questionnaire, in the postoperative period of one month, four months, one year and then annually, up to a maximum of 3 years of follow-up. RESULTS: There were no statistically significant differences in presence of rippling, stretch marks, breast ptosis, capsular contracture and quality of scars. There was a higher rate of patients who were very satisfied with the outcome 360 days after surgery in the group receiving silicone foam implants (p = 0.036). CONCLUSION: In short time, silicone foam envelope implants proved to be as reliable as textured silicone envelope implants, making them an option for augmentation mammoplasty.

Comparative clinical evaluation of breast augmentation using silicone foam coated implants and textured implants

Abstract Purpose To evaluate whether silicone foam implants have a different evolution pattern compared to conventional texture implants. Methods Fifty-eight female patients underwent surgery. They were divided into two groups (silicone foam - Lifesil® - and microtexturized silicone - Lifesil®). The evolution was analyzed in postoperative consultations, with physical examination, photographic documentation and filling in a satisfaction questionnaire, in the postoperative period of one month, four months, one year and then annually, up to a maximum of 3 years of follow-up. Results There were no statistically significant differences in presence of rippling, stretch marks, breast ptosis, capsular contracture and quality of scars. There was a higher rate of patients who were very satisfied with the outcome 360 days after surgery in the group receiving silicone foam implants (p = 0.036). Conclusion In short time, silicone foam envelope implants proved to be as reliable as textured silicone envelope implants, making them an option for augmentation mammoplasty.

Monitorização de células-tronco mesenquimais injetadas via retrobulbar próximas ao nervo óptico lesados de coelhos / Monitoring of stem cells from adipose tissue injected via retrobulbar next to previously injured optic nerve of rabbits

Resumo Objetivo: Verificar a presença das células-tronco mesenquimais (MSC) na área próxima ao nervo óptico de coelhos previamente lesado com álcool absoluto. Métodos: Os 12 coelhos da raça Nova Zelândia foram distribuídos em 2 lotes. Após sedação, cada olho do animal recebeu uma injeção retrobulbar de 1 ml de álcool absoluto em um dos olhos e de 1 ml de solução fisiológica 0,9% (SF) no olho contralateral. Após 15 dias deste procedimento inicial todos os olhos dos animais pertencentes ao lote A, receberam via retrobulbar, uma solução contendo MSC de tecido adiposo humano e previamente marcadas com Qdots,. Todos os olhos dos animais do lote B receberam solução PBS. Resultados: Após 15 dias desta última aplicação os animais foram sacrificados e as lâminas foram analisadas. A presença das MSC foi observada em 100% dos olhos dos animais do lote A. Conclusão: Os resultados sugerem que a marcação prévia das MSC com Qdots permitiu o acompanhamento das mesmas na região aplicada e em áreas mais internas do nervo óptico. A permanência de MSC após 15 dias de aplicação ao redor do nervo óptico sugere a viabilidade e possível participação das mesmas no processo de regeneração do tecido lesado. Nas condições deste estudo, a via de aplicação retrobulbar permitiu a mobilização das células tronco do local de aplicação até áreas centrais dos nervos ópticos nos animais do lote A, sugerindo que esta poderá ser uma via de acesso eficaz para as MSC no processo de regeneração de neuropatias ópticas.

Abstract Obtective: To verify the presence of mesenchymal stem cells (MSC) in the area close to the optic nerve of previously injured with absolute alcohol. Methods: Twelve New Zealand breed rabbits were divided into two groups, and after sedation, each eye of the animal received a retrobulbar injection of 1 ml of absolute ethanol in one eye, and 1 ml of physiological solution 0.9 % (PS) in the contralateral eye. After 15 days all eyes of animals belonging to group A, received via retrobulbar a solution containing MSCs from human adipose tissue (AT) and previously marked with Qdots, while all eyes of animals from group B received solution containing PBS. Results: The presence of MSC was observed in 100% of the eyes of the animals of group A and the more central areas near and into the optic nerve. Conclusion: The results suggest that the appointment of MSC with Qdots allowed their follow-up applied in the region and in the inner areas of the optic nerve. The MSC permanence after 15 days of application around the optic nerve suggests the feasibility and possible involvement of the same during the damaged tissue regeneration process. Under the conditions of this study, the route of retrobulbar application and the presence of the stem cells to the central areas of the optic nerves in animals of group A, suggests that this might be an effective approach for MSCs in regeneration process of optic neuropathies.

A Reliable Stem Cell Carrier: An Experimental Study in Wistar Rats.

INTRODUCTION: Treatments based on cell biology need reliable and precise carriers for reaching the desired targets. For that reason, a PDO-based cell carrier was idealized, with the purpose of carrying stem cells to distant sites at room temperature. MATERIALS AND METHODS: Three modalities of the same carrier were evaluated: one containing undifferentiated human dental pulp stem cells (DPSCs); one loaded with stem cells induced to neurogenic differentiation (DPSCNs); and one without cells (Blank). The carriers were implanted in sciatic nerve gaps in 48 Wistar rats that were divided in three groups. Two other rats were included in a SHAM control group. Immunohistochemical, histological and clinical analyses were performed in two, four, six and eight weeks of time. RESULTS: Efficacy of human stem cell transportation at room temperature to rats was attested. Moreover, it was possible to confirm that those cells show tropism for inflamed environments and are also prone to induction of neurogenesis in the first two weeks, vanishing after that period. CONCLUSION: Clinical evaluation of the animals' gait recovery shows a promising perspective of success with the inclusion of stem cell-loaded PDO tubes in nerve gaps, which may be positively compared to previously published studies. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors - www.springer.com/00266.

Regenerative collagen biomembrane: Interim results of a Phase I veterinary clinical trial for skin repair.

Background: The availability of commercial tissue engineering skin repair products for veterinary use is scarce or non-existent. To assess features of novel veterinary tissue engineered medical devices, it is therefore reasonable to compare with currently available human devices. During the development and regulatory approval phases, human medical devices that may have been identified as comparable to a novel veterinary device, may serve as predicate devices and accelerate approval in the veterinary domain. The purpose of the study was to evaluate safety and efficacy of the biomembrane for use in skin repair indications. Methods: In the study as a whole (3 year total length), 15 patients (animals), dogs and cats (male/female, <8 years) with skin lesions of different etiologies considered difficult to heal (size, >2 cm), with a wound depth equivalent to 2nd/3rd degree burns are to be studied from Day 0 to Day 120-240, post-application of the biomembrane. This interim report covers the 5 patients assessed to date and deemed eligible, of which 3 enrolled, and 2 have completed the treatment. Wound beds were prepared and acellular collagen biomembranes (Eva Scientific Ltd, São Paulo, Brazil) applied directly onto the wounds, and sutured at the margins to the patient's adjacent tissue. Wound size over time, healing rate, general skin quality and suppleness were assessed as outcomes. Qualitative (appearance and palpation) and quantitative (based on Image Analysis of photographs) wound assessment techniques were used. Results: Both patients' wounds healed fully, with no adverse effects, and the healing rate was comparable in both, maxing out at approximately 1 cm 2/day. Conclusions: Early results on the biomembrane's safety and efficacy indicate suitability for skin repair usage in veterinary patients.

Liquid silicone used for esthetic purposes as a potentiator for occurrence of post-radiotherapy genital lymphedema: case report.

CONTEXT:: Lymphedema consists of extracellular fluid retention caused by lymphatic obstruction. In chronic forms, fat and fibrous tissue accumulation is observed. Genital lymphedema is a rare condition in developed countries and may have primary or acquired etiology. It generally leads to urinary, sexual and social impairment. Clinical treatment usually has low effectiveness, and surgical resection is frequently indicated. CASE REPORT:: We report a case of a male-to-female transgender patient who was referred for treatment of chronic genital lymphedema. She had a history of pelvic radiotherapy to treat anal cancer and of liquid silicone injections to the buttock and thigh regions for esthetic purposes. Radiological examinations showed signs both of tissue infiltration by liquid silicone and of granulomas, lymphadenopathy and lymphedema. Surgical treatment was performed on the area affected, in which lymphedematous tissue was excised from the scrotum while preserving the penis and testicles, with satisfactory results. Histopathological examination showed alterations compatible with tissue infiltration by exogenous material, along with chronic lymphedema. CONCLUSION:: Genital lymphedema may be caused by an association of lesions due to liquid silicone injections and radiotherapy in the pelvic region. Cancer treatment decisions for patients who previously underwent liquid silicone injection should take this information into account, since it may represent a risk factor for radiotherapy complications.

Liquid silicone used for esthetic purposes as a potentiator for occurrence of post-radiotherapy genital lymphedema: case report / Silicone líquido utilizado com finalidade estética como potencializador da ocorrência de linfedema genital pós-radioterapia: relato de caso

ABSTRACT CONTEXT: Lymphedema consists of extracellular fluid retention caused by lymphatic obstruction. In chronic forms, fat and fibrous tissue accumulation is observed. Genital lymphedema is a rare condition in developed countries and may have primary or acquired etiology. It generally leads to urinary, sexual and social impairment. Clinical treatment usually has low effectiveness, and surgical resection is frequently indicated. CASE REPORT: We report a case of a male-to-female transgender patient who was referred for treatment of chronic genital lymphedema. She had a history of pelvic radiotherapy to treat anal cancer and of liquid silicone injections to the buttock and thigh regions for esthetic purposes. Radiological examinations showed signs both of tissue infiltration by liquid silicone and of granulomas, lymphadenopathy and lymphedema. Surgical treatment was performed on the area affected, in which lymphedematous tissue was excised from the scrotum while preserving the penis and testicles, with satisfactory results. Histopathological examination showed alterations compatible with tissue infiltration by exogenous material, along with chronic lymphedema. CONCLUSION: Genital lymphedema may be caused by an association of lesions due to liquid silicone injections and radiotherapy in the pelvic region. Cancer treatment decisions for patients who previously underwent liquid silicone injection should take this information into account, since it may represent a risk factor for radiotherapy complications.

RESUMO CONTEXTO: O linfedema consiste de retenção de fluido extracelular causada por obstrução linfática. Nas formas crônicas, observa-se acúmulo de tecido adiposo e fibrose. O linfedema genital é uma doença rara em países desenvolvidos e pode ter etiologia primária ou adquirida, em geral cursando com disfunções urinária e sexual, bem como com prejuízo do convívio social. O tratamento clínico é, em geral, pouco efetivo, indicando-se com frequência a abordagem cirúrgica, com excisão da área afetada. RELATO DE CASO: Relata-se o caso de paciente feminina transgênero, encaminhada para tratamento de linfedema genital crônico. Havia antecedente pessoal de tratamento de câncer de canal anal com radioterapia pélvica e de injeções de silicone líquido em glúteos e coxas com finalidade estética. Exames radiológicos mostraram tanto sinais de infiltração tecidual por silicone líquido como granulomas e linfadenopatia como de linfedema. Foi realizado o tratamento cirúrgico da área afetada, com excisão do tecido linfadenomatoso do escroto, preservando o pênis e testículos, com resultado satisfatório. A análise histopatológica mostrou achados compatíveis com infiltração tecidual por material exógeno, bem como com linfedema crônico. CONCLUSÃO: O linfedema genital pode ser causado pela associação de lesão por injeção de silicone líquido e radioterapia na região pélvica. As decisões no tratamento de neoplasias em pacientes previamente submetidos a injeção de silicone líquido devem levar em conta esse fato, já que pode representar fator de risco para complicações de tratamento radioterápico.

Patient Versus Surgeon Preferences Between Traditional and Neo-omphaloplasty in Post-bariatric Abdominoplasty.

BACKGROUND: Abdominoplasty procedures have been proven highly valuable in promoting better quality of life for post-bariatric surgery patients. The literature reveals that the aspect of the navel is one of the most problematic issues regarding surgical results and many different surgical techniques have been proposed to obtain a satisfactory outcome. However, little is known about patients' preferences regarding these different techniques and their results. The aim of the present study was to compare evaluations made by plastic surgeons and patients of the results of two different techniques-traditional omphaloplasty and neo-omphaloplasty with lateral flaps. METHODS: Five plastic surgeons analyzed postoperative pictures of 54 post-bariatric abdominoplasties performed between 2008 and 2013 at the Unicamp Hospital. Pictures of 12 cases were selected and evaluated by 50 patients waiting for a post-bariatric abdominoplasty. A standardized scale was used that contained the following criteria: volume of the abdomen, lateral contour, quality of the scars, umbilicus and skin excess/flaccidity. RESULTS: Surgeons gave the highest scores to 71.6% of neo-omphaloplasty cases and patients to 43.7%. Both surgeons and patients graded navels operated on using this technique higher, although the comparison was not statistically significant for patient evaluations (p = 0.062). The navel aspect was considered the fourth most relevant aspect among those evaluated. CONCLUSION: Neo-omphaloplasty results were considered better than traditional omphaloplasty for surgeons and patients, although there was not a clear differentiation of results by the latter. The navel postoperative aspect was considered secondarily important by patients to the results of post-bariatric abdominoplasties. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Mucinous adenocarcinoma associated with chronic suppurative hidradenitis: Report of a case and review of the literature.

INTRODUCTION: Chronic suppurative hidradenitis (CSH) is a benign condition that can affect the perineal region and often leads to the formation of abscesses and fistulas. It is rare for CSH to undergo malignant degeneration into mucinous adenocarcinoma. PRESENTATION OF CASE: We report a case of a 55-year-old male patient with perineal CSH who suffered worsening long-term pain despite multiple surgical procedures to alleviate his symptoms. Pelvic magnetic resonance imaging (MRI) showed multiloculated cystic lesion on the left side wall of the distal rectum with gluteal extension. Pathological examination revealed mucinous adenocarcinoma. The patient underwent an abdominoperineal resection (APR) of the rectum with cutaneous muscle flap reconstruction. Although histopathological sections showed clear margins, the tumor recurred 6 months following surgery. DISCUSSION: Perineal mucinous adenocarcinoma arising in a patient with CSH is an extremely rare condition. This diagnosis is often difficult, due to the paucity of signs of malignant degeneration as well as the rarity of the disease itself. Surgical resection of the lesions is a well-established approach. In this case, diagnosing the tumor at such a late stage likely compromised his outcome. CONCLUSION: Malignant degeneration to mucinous adenocarcinoma must be suspected in patients with a history of long-term CSH. In such cases, local biopsies and a radiological examination, such as MRI can help in the diagnosis.

Desenvolvimento e aplicação de um protocolo antropométrico para a avaliação de resultados de otoplastia / Development and implementation of an anthropometric protocol to evaluate results of otoplasty

INTRODUÇÃO: A proeminência dos pavilhões auriculares é a forma mais comum de deformidade desta estrutura, afetando em torno de 5% da população. A maioria dos trabalhos acerca da cirurgia de otoplastia apresenta avaliações subjetivas, não permitindo apreciar acuradamente os resultados no pós-operatório, bem como dificultando a comparação entre técnicas. Propõe-se o desenvolvimento e aplicação de protocolo específico para avaliação dos resultados. MÉTODO: Avaliação prospectiva pelo período de um ano de pacientes submetidos à otoplastia bilateral utilizando técnica baseada em modelagem cartilaginosa com suturas, utilizando medidas da distância hélice-mastoide em pontos padronizados. RESULTADOS: Foram operados 23 pacientes com idade média de 17,8 anos. A incidência de reoperação foi de 21,7% dos pacientes ou 10,7% das orelhas. Houve perda de cerca de 45% da correção obtida no ponto superior e 35% nos pontos médio e inferior nos pacientes não reoperados. CONCLUSÕES: O protocolo foi de fácil utilização e permitiu a avaliação objetiva tanto da deformidade no pré-operatório quanto dos resultados cirúrgicos. A técnica utilizada produziu resultados considerados adequados e comparáveis aos da literatura.

INTRODUCTION: Prominence is the most common deformity of the ear, affecting about 5% of the population. Most reports on otoplasty describe subjective evaluations, and do not provide accurate postoperative assessment or a comparison between techniques. We propose the development and implementation of a specific protocol to evaluate results. METHOD: A prospective evaluation for a period of one year in patients who underwent bilateral otoplasty was performed, using a technique based on modeling of the cartilage with sutures, and helix-to-mastoid distance measurements at standardized points. RESULTS: A total of 23 patients with an average age of 17.8 years underwent surgery. Reoperation was performed in 21.7% of the patients or 10.7% of the ears. Nearly 45% of the correction obtained at the upper point and 35% at the middle and lower points were lost in patients who did not undergo reoperation. CONCLUSIONS: The protocol was easily used and allowed objective evaluation of the preoperative deformity and surgical results. This technique produced results considered adequate and comparable to the literature.

Lower energy and pulse stacking. A safer alternative for skin tightening using fractional CO2 laser.

PURPOSE: To evaluate the effect of different energies and stacking in skin shrinkage. METHODS: Three decreasing settings of a fractional CO2 laser were applied to the abdomen of Twenty five Wistar rats divided into three groups. Group I (n=5) was histologically evaluated for microthermal zones dimensions. Groups II and III (n=10 each) were macroscopic evaluated with freeware ImageJ for area contraction immediately and after 30 and 60 days. RESULTS: No statistical significance was found within microthermal zone histological dimensions (Group I) in all settings studied. (Ablation depth: 76.90 to 97.18µm; Coagulation depth: 186.01 to 219.84 µm). In Group II, macroscopic evaluation showed that all settings cause significant immediate skin contraction. The highest setting cause significant more intense tightening effect initially, contracting skin area from 258.65 to 179.09 mm2. The same pattern was observed in Group III. At 30 and 60 days, the lowest setting significantly sustained contraction. CONCLUSION: Lower fractional CO2 laser energies associated to pulse stacking could cause consistent and long lasting tissue contraction in rats.

Lower energy and pulse stacking. A safer alternative for skin tightening using fractional CO2 laser

PURPOSE : To evaluate the effect of different energies and stacking in skin shrinkage. METHODS : Three decreasing settings of a fractional CO2 laser were applied to the abdomen of Twenty five Wistar rats divided into three groups. Group I (n=5) was histologically evaluated for microthermal zones dimensions. Groups II and III (n=10 each) were macroscopic evaluated with freeware ImageJ for area contraction immediately and after 30 and 60 days. RESULTS : No statistical significance was found within microthermal zone histological dimensions (Group I) in all settings studied. (Ablation depth: 76.90 to 97.18µm; Coagulation depth: 186.01 to 219.84 µm). In Group II, macroscopic evaluation showed that all settings cause significant immediate skin contraction. The highest setting cause significant more intense tightening effect initially, contracting skin area from 258.65 to 179.09 mm2. The same pattern was observed in Group III. At 30 and 60 days, the lowest setting significantly sustained contraction. CONCLUSION : Lower fractional CO2 laser energies associated to pulse stacking could cause consistent and long lasting tissue contraction in rats.

Useful properties of undifferentiated mesenchymal stromal cells and adipose tissue as the source in liver-regenerative therapy studied in an animal model of severe acute fulminant hepatitis.

BACKGROUND AIMS: End-stage liver diseases frequently require liver transplantation. Cell therapy could be an alternative. This study aimed to analyze whether undifferentiated mesenchymal stromal cells (U-MSCs) or MSC-derived hepatocyte-like cells (DHLCs) from adipose tissue (AT), umbilical cord blood (UCB) and bone marrow (BM) would better restore damaged liver. METHODS: AT was obtained from lipo-aspiration, UCB from an Umbilical Cord Blood Bank and BM from a BM Transplantation Unit. AT (collagenase digestion), UCB and BM (Ficoll gradient) were cultured (Dulbecco's modified Eagle's medium, low glucose, FBS) for 3 days. Detached adherent cells, at passage 4, were characterized as MSCs. Genetic stability was investigated by means of telomerase enzyme activity and karyotype. Hepatocyte differentiation protocol was performed with the use of Dulbecco's modified Eagle's medium, hepatocyte growth factor, basic fibroblast growth factor and nicotinamide (7 days); maturation medium (oncostatin, dexamethasone, insulin, transferrin and selenium) was added at 36 days. Hepatogenesis analyses were performed by use of morphology and albumin, AF, tyrosine-aminotransferase and glutamine synthetase gene expression and quantitative reverse transcription-polymerase chain reaction on days 9, 18, 25 and 36. Functionality was assessed through glycogen storage detection, indocyanine green absorption and transplantation procedure. U-MSCs and DHLCs were injected 48 h after induced fulminant hepatitis (intraperitoneal injection of carbon tetrachloride) in SCID/BALB-c mice. Histopathologic analyses were performed on days 7 and 15. Human origin included albumin and CK19 human markers. RESULTS: All MSCs differentiated into functional hepatocyte-like cells, stored glycogen and absorbed indocyanine green. AT-MSC DHLC gene expression was more consistent with a normal hepatogenic-differentiation profile. UCB-MSCs expanded weakly, impairing their use for the transplantation procedure. AT and BM U-MSCs and DHLCs regenerated liver injury equally. Regenerated hepatocytes exhibited human origin. CONCLUSIONS: AT might be the source and U-MSCS the stem cells useful for liver-regenerative therapy.

Mamoplastias redutoras e mastopexias realizadas no HC-UNICAMP: análise comparativa entre duas técnicas / Reduction mammoplasties and mastopexies performed at HC-UNICAMP: comparative analysis between two techniques

Introdução: Diferentes técnicas para mamoplastia redutora e mastopexia são descritas na literatura, visando a resultados que reconstituam o polo superior, ofereçam melhor projeção e proporcionem tratamento adequado para a ptose mamária. No entanto, devemos nos atentar para a segurança da técnica, com manutenção da vascularização, inervação dos tecidos e possibilidade de amamentação. Análise comparativa com pacientes operadas pela técnica com retalho de pedículo inferior e pacientes operadas pela técnica com sutura circular em bolsa. Métodos: Análise de 85 pacientes submetidas à mamoplastia redutora ou mastopexia sem implantes, entre janeiro de 2011 e dezembro de 2012, no Hospital de Clínicas da Unicamp. Foram excluídos 31 pacientes, as quais foram submetidas apenas à mamoplastia redutora pela técnica de Pitanguy (sem utilização de retalhos ou sutura circular). Dentre as 54 pacientes restantes, cinco foram posteriormente excluídas devido ao não comparecimento à consulta ou à não realização da ultrassonografia pós-operatória. Foram agrupadas 16 pacientes submetidas à sutura circular contínua e 33 pacientes operadas pela técnica de pedículo inferior. Resultados: Dados demográficos foram semelhantes nos dois grupos. Maior número de pequenas complicações e resultados insatisfatórios foi observado no grupo submetido à técnica de pedículo inferior, bem como maior índice de achados ultrassonográficos relevantes no pós-operatório. Conclusão: A técnica de sutura circular contínua apresentou elevado índice de satisfação, menor número de complicações e resultados mais duradouros quando comparados com a técnica de pedículo inferior, durante o período analisado.

Introduction: Several reduction mammoplasty and mastopexy techniques are described in the literature, with the aim of reconstituting the upper pole, offering better projection, and providing adequate treatment for breast ptosis. However, particular attention should be devoted to the safety of the technique, with maintenance of vascularization, tissue innervation, and the capability of breastfeeding. Female patients operated on with the inferior pedicle flap technique were compared with those operated on with purse-string circular suturing. Methods: Eighty-five patients who had undergone reduction mammoplasty or mastopexy without implants, between January 2011 and December 2012 at Unicamp's Clinical Hospital, were evaluated. Thirty-one patients who only underwent reduction mammoplasty by Pitanguy's technique (without the use of flaps or circular sutures) were excluded. Of the remaining 54 patients, five were subsequently excluded for not attending medical appointments or failure to have postoperative ultrasonography. A group of 16 patients who had undergone circular suturing and a group of 33 operated on by the inferior pedicle technique were considered. Results: Demographic data were similar for both groups. A higher number of minor complications and unsatisfactory results were observed in the group that underwent the inferior pedicle technique, who also had a higher rate of relevant post-operative ultrasonography events. Conclusion: The circular suturing technique resulted in a high satisfaction rate, lower number of complications, and longer lasting results than the inferior pedicle technique, during the period analyzed in this study.