Lipectomia e lipoaspiração seriadas para manejo de síndrome de Madelung: A respeito de um caso / Serial lipectomy and liposuction for management of Madelung syndrome: About a case

A doença de Madelung é caracterizada pelo acúmulo simétrico e difuso de tecido adiposo com crescimento tumoral lento e progressivo. Neste relato de caso, um paciente portador dessa síndrome foi atendido no Hospital das Clínicas, em Recife, PE, com o objetivo de realizar uma redução do conteúdo lipomatoso através de lipectomia. O paciente apresentava volumosas massas de tecido adiposo elástico ao redor do pescoço e região supraclavicular e a proposta terapêutica consistiu em uma cirurgia em dois tempos, com lipoaspiração e lipectomia cervical anterior, seguida de lipoaspiração e lipectomia cervical posterior. Antes da cirurgia, foi solicitado um parecer cardiológico, que indicou um risco intermediário, mas não contraindicou o procedimento. Após 4 dias da cirurgia, o paciente apresentou equimoses e edema periférico na ferida operatória cervical, porém estava assintomático. As técnicas de lipectomia e lipoaspiração são consideradas os métodos de tratamento mais eficazes para a doença de Madelung. No entanto, a escolha da cirurgia deve ser baseada em uma avaliação abrangente da gravidade da doença, localização da massa e expectativas do paciente, uma vez que ambas as técnicas possuem vantagens e desvantagens.

Madelung's disease is characterized by the symmetric and diffuse accumulation of adipose tissue with slow and progressive tumor growth. In this case report, a patient with this syndrome was treated at Hospital das Clínicas, in Recife, PE, to reduce the lipomatous content through a lipectomy. The patient presented large masses of elastic adipose tissue around the neck and supraclavicular region and the therapeutic proposal consisted of a two-stage surgery, with liposuction and anterior cervical lipectomy, followed by liposuction and posterior cervical lipectomy. Before surgery, a cardiological opinion was requested, which indicated an intermediate risk but did not contraindicate the procedure. Four days after surgery, the patient presented bruises and peripheral edema in the cervical surgical wound but was asymptomatic. Lipectomy and liposuction techniques are considered the most effective treatment methods for Madelung disease. However, the choice of surgery should be based on a comprehensive assessment of the severity of the disease, location of the mass, and patient expectations, as both techniques have advantages and disadvantages.

Biópsia excisional de lipoma em fundo de vestíbulo mandibular: um relato de caso / Excisional biopsy of lipoma in the buccal mandibular vestibule: a case report

Introdução: os lipomas são as neoplasias benignas de origem mesenquimal mais comum, podendo acometer diversas partes do corpo, sendo a região maxilofacial, de fato, uma das menos frequentes. Clinicamente, manifestam-se como aumentos de volume de crescimento lento e circunscrito, de base séssil ou pediculada, superfície lisa e consistência macia e coloração amarelada. Os sítios intra-orais mais acometidos são a mucosa jugal e o vestíbulo bucal.Dentre suas variantes microscópicas mais comuns, estão o fibrolipoma, composto de um componente fibroso. No entanto, tais variações não afetam o prognóstico do seu tratamento, que deve ser realizado através da excisão conservadora da lesão. OBJETIVO: O presente trabalho tem como objetivo relatar um caso atípico de lipoma intra-oral. DESCRIÇÃO DO CASO: Paciente do sexo feminino, 67 anos, apresentou-se com aumento de volume em região de fundo de vestíbulo mandibular com evolução de, aproximadamente, 10 meses, indolor, com queixas de dificuldade no posicionamento da prótese dentária inferior. O diagnóstico inicial foi de lipoma, confirmado por análise anatomopatológica através de biópsia excisional da peça. Considerações finais: O tratamento de lipomas intra-orais preconizado pela literatura é a excisão local, obtida por meio da biópsia excisional, sendo uma solução eficaz e de baixa morbidade ao paciente(AU)

Introduction: lipomas are the most common benign neoplasms of mesenchymal origin, which can affect different parts of the body, with the maxillofacial region, in fact, one of the least frequent. Clinically, they manifest as slow-growing, circumscribed swellings, with a sessile or pedunculated base, smooth surface, soft consistency and yellowish color. The most affected intraoral sites are the buccal mucosa and the buccal vestibule. Among its most common microscopic variants are the fibrolipoma, composed of a fibrous component. However, such variations do not affect the prognosis of its treatment, which must be carried out through conservative excision of the lesion. OBJECTIVE: This study aims to report an atypical case of intraoral lipoma. CASE DESCRIPTION: A 67-yearold female patient presented with swelling in the bottom region of the mandibular vestibule with an evolution of approximately 10 months, painless, with complaints of difficulty in positioning the lower dental prosthesis. The initial diagnosis was lipoma, confirmed by anatomopathological analysis through excisional biopsy of the specimen. Final considerations: The treatment of intraoral lipomas recommended by the literature is local excision, obtained through excisional biopsy, being an effective solution with low morbidity for the patient(AU)

Middle ear lipoma as a mimicker of other diseases: a review of an unusual presentation / Lipoma en el oído medio como un imitador de otras enfermedades: una revisión de una presentación inusual

The finding of a lipoma in the middle ear is much rarer than its occurrence in the external auditory canal or even the inner ear, with fewer than seven cases described in the literature and none of them in Spain or South America. Despite its benign nature, the location of the lipoma may compromise structures that play a significant role in auditory preservation or balance control, necessitating surgical removal as a curative treatment. The main objective of this article is to describe the presentation of lipomas in the middle ear as a possible, although rare, etiology to consider in patients presenting with hearing loss, instability, or both symptoms concurrently, seeking otorhinolaryngological evaluation.

El hallazgo de un lipoma en el oído medio es mucho más raro que su ocurrencia en el canal auditivo externo o incluso en el oído interno, con menos de siete casos descritos en la literatura y ninguno de ellos en España o Sudamérica. A pesar de su naturaleza benigna, la ubicación del lipoma puede comprometer estructuras que desempeñan un papel significativo en la preservación auditiva o en el control del equilibrio, lo que hace necesaria la extirpación quirúrgica como tratamiento curativo. El objetivo principal de este artículo es describir la presentación de los lipomas en el oído medio como una posible, aunque rara, etiología a considerar en pacientes que presentan pérdida de audición, inestabilidad o ambos síntomas simultáneamente, buscando evaluación otorrinolaringológica.

Coexisting non-functioning pituitary macroadenoma and sellar-suprasellar lipoma: A case report and literature review

@#Intracranial lipomas are benign tumors that may occasionally be found in the suprasellar cistern while pituitary adenomas are far more common brain tumors. Pituitary adenomas may rarely coexist with other intracranial tumors in the sellar-suprasellar region. We share a unique case of a patient with coexisting non-functioning pituitary adenoma and sellar-suprasellar lipoma presenting with blurring of vision. We report a 55-year-old male presenting with a two-year history of blurring of vision with findings of a 2.7 x 3.0 x 3.2 cm homogeneously enhancing lobulated isointense mass on the sellar-suprasellar region. Hormonal workups revealed low cortisol and mildly elevated prolactin. He initially underwent endonasal transsphenoidal excision of the tumor which revealed to be a lipoma on histopathology. Due to minimal improvement of vision from the subtotal excision, he underwent repeat surgery through the transcranial approach which in turn showed a pituitary adenoma. The co-occurrence of two sellar-suprasellar tumors with different histology is rare, as most of the evidence is based on only a handful of case series. Intracranial lipomas result from persistence and abnormal differentiation of the meninx primitiva during the development of the subarachnoid cisterns. On the other hand, pituitary tumorigenesis is still largely unclear but appears to involve multiple tumor suppressor genes, oncogenes, cell cycle deregulation factors, and miRNAs. Given the differing pathogenesis of each tumor type, the coexistence may only be coincidental. The best surgical approach in this situation is unknown but the focus is on complete excision of the adenoma.

Sensory and Motor Median Nerve Neuropathy Due to a Deep Giant Hand Lipoma: A Case Report / Neuropatia sensorial e motora do nervo mediano por um lipoma gigante na mão: Relato de caso

Abstract Lipomas are the most common soft-tissue tumors in the human body, but their location in the hand is rare. Symptomatic hand lipomas, due to nerve compression, are even rarer. We present a case of median nerve neuropathy as a result of a giant palm lipoma, located on the thenar and hypothenar areas of the hand. The patient had typical symptoms of carpal tunnel syndrome, along with compromised thumb motion. Intraoperatively, the recurrent motor branch of the median nerve was sitting on the lipoma under a great tension. This particular location of the motor branch of the median nerve in relation to the lipoma makes this case unique. The tumor was excised protecting the neurovascular structures, and a few weeks later the patient regained full thumb motion, grip strength, and resolution of dysesthesia.

Resumo Os lipomas são os tumores de partes moles mais comuns no corpo humano, mas sua localização na mão é rara. Os lipomas de mão que causam sintomas por compressão do nervo são ainda mais raros. Apresentamos um caso de neuropatia do nervo mediano decorrente de um lipoma palmar gigante, localizado nas regiões tenar e hipotenar da mão. A paciente apresentava sintomas típicos de síndrome do túnel do carpo, além de comprometimento dos movimentos do polegar. Durante a cirurgia, o ramo motor recorrente do nervo mediano repousava sobre o lipoma sob grande tensão. Esta localização particular do ramo motor do nervo mediano em relação ao lipoma torna este caso único. O tumor foi extirpado, protegendo as estruturas neurovasculares e, poucas semanas depois, a paciente havia recuperado totalmente os movimentos do polegar e força de preensão, além de apresentar resolução da disestesia.

"Neumonía adquirida de la comunidad": su confusión mediante las imágenes con lipoma de pericardio / "Community-Acquired Pneumonia": Confusion with Pericardial Lipoma Through Imaging

RESUMEN Se presenta un caso de bronquitis aguda confundido como neumonía de la comunidad en Emergencias Médicas con un lipoma pre existente de pericardio. Se realizan consideraciones sobre los lipomas en tomografías, incidencia y diagnósticos diferenciales, así como su confusión por profesionales no avezados en imágenes.

ABSTRACT We present a case of acute bronchitis misdiagnosed as community-acquired pneumonia in Medical Emergencies with a pre-existing pericardial lipoma. Considerations are made regarding lipomas in tomography, their incidence, and diffe rential diagnoses, as well as the confusion that can arise among professionals who are not well-versed in imaging.

Giant Quadrigeminal Cistern Lipoma: A Case Report and Literature Review / Lipoma gigante de cisterna quadrigeminal: Relato de caso e revisão da literatura

We report the case of a giant lipoma of the quadrigeminal cistern in a 30-year-old female patient with headache, nausea, vomiting, and phono and photophobia. Despite the large size of the tumor, conservative treatment was chosen. Intracranial lipomas are rare benign tumors commonly associated with congenital anomalies, and their origin is related to an incorrect embryonic development. The diagnosis is made mainly by cranial computed tomographyand magnetic resonance imaging. The treatment of lipoma can be surgical or conservative, and there is no single treatment for the different patients' cases.

Relatamos o caso de um lipoma gigante de cisterna quadrigeminal em uma paciente de 30 anos, do sexo feminino, com cefaleia, náusea, fono e fotofobia, no qual se optou pelo tratamento conservador. Os lipomas intracranianos são tumores benignos raros comumente associados a anomalias congênitas, e sua origem relaciona-se ao mau desenvolvimento embrionário. A investigação diagnóstica é feita predominantemente através da tomografia computadorizada e ressonância nuclear magnética do crânio, e não existe um tratamento único para os diferentes quadros dos pacientes.

Lipoma intramuscular em língua: relato de caso e atualização da literatura / Intramuscular lipoma in the tongue: case report and literature update

Objetivo: Descrever um caso de paciente com lipoma oral intramuscular e compilar os principais aspectos dessa rara lesão. Relato do caso: Mulher caucasiana de 78 anos queixou-se de inchaço na língua. O aumento de volume apresentava cerca de 5 anos de evolução. O exame físico revelou uma lesão nodular na borda lateral direita da língua com diâmetro de aproximadamente 2,5 cm, macia ao toque, superfície lisa sem indícios de trauma, coloração semelhante à da mucosa lingual e com limites nítidos. Realizou-se biópsia excisional e o exame histopatológico revelou tecido adiposo maduro, com fibras musculares aprisionadas no interior e ao redor da lesão, ausência de atipias citológicas e mitoses, estabelecendo o diagnóstico definitivo de lipoma intramuscular. Não houve recorrência durante um período de 4 anos. Discussão: Lipoma é uma neoplasia benigna composta por adipócitos maduros, incomum na cavidade oral. Seu padrão intramuscular é uma forma rara de lipoma com comportamento infiltrativo e taxa de recorrência maior que o lipoma comum. Sua etiopatogenia não é totalmente compreendida e seu tratamento padrão é a excisão cirúrgica. Essa lesão faz diagnóstico diferencial com outras patologias importantes, inclusive o lipossarcoma. Existem poucos casos documentados de lipomas intramusculares em língua. Conclusão: O lipoma oral intramuscular é raro e o cirurgião-dentista precisa atentar ao seu diagnóstico diferencial com lipossarcoma e ao seu maior potencial de recidiva em relação ao lipoma comum.

Aim:To describe a case of a patient with intramuscular oral lipoma and to compile the main aspects of this rare lesion. Case report:A 78-year-old caucasian woman complained of a swelling on her tongue. The increase in volume showed an evolution of about 5 years. Physical examination revealed a nodular lesion on the right lateral border of the tongue with a diameter of approximately 2.5 cm, soft to the touch, smoothsurface with no evidence of trauma, color similar to that of the lingual mucosa and with clear limits.An excisional biopsy was performed and the histopathological examination revealed mature adipose tissue, with muscle fibers trapped inside and around the lesion, absence of cytological atypia and mitosis, establishing the definitive diagnosis of intramuscular lipoma. There was no recurrence over a period of 4 years. Discussion:Lipoma is a benign neoplasm composed of mature adipocytes, uncommon in the oral cavity. Its intramuscular pattern is a rare form of lipoma with infiltrative behavior and a higher recurrence rate than the common lipoma. Its etiopathogenesis is not fully understood and its standard treatment is surgical excision. This lesion makes a differential diagnosis with other important pathologies, including liposarcoma. There are few documented cases of intramuscular lipomas on the tongue. Conclusion:Intramuscular oral lipoma is rare and dentists need to pay attention to its differential diagnosis with liposarcoma and its greater potential for recurrence in relation to common lipoma.

Giant Submucosal Lipoma of the Right Colon Spontaneously Expelled Rectally: Case Report

Colonic lipomas are benign tumors originating in mesenchymal tissue and are considered the second most common benign tumor in the colon after adenomatous polyps. They tend to affect women more; their most frequent location is the right colon. Generally, these lipomas do not exhibit symptoms, but when they reach a considerable size, they can cause manifestations. They can also result in complications such as obstruction, intussusception, and perforation. Since their radiological characteristics are similar to fat, they can be visualized using computed tomography. Still, the final diagnosis is made through colonoscopy, where a fatty mass with an oval shape and elastic capacity is observed. Lesions can be removed endoscopically or surgically. Spontaneous expulsion of a lipoma rectally is rare, and its mechanism is not yet fully understood. Although the literature establishes a cut-off point of 2 cm to decide between endoscopic or laparoscopic resection, the former is increasing and can extend this limit. Surgical resection is recommended in cases such as the one in this article. This case is the biggest reported colonic lipoma (13 cm) expelled spontaneously.

Los lipomas colónicos son tumores benignos que se originan en el tejido mesenquimal y se consideran el segundo tumor benigno más común en el colon, después de los pólipos adenomatosos. Tienden a afectar más a mujeres y su localización más frecuente es el colon derecho. Por lo general, estos lipomas no presentan síntomas, pero cuando alcanzan un tamaño considerable pueden causar manifestaciones. También pueden dar lugar a complicaciones como obstrucción, intususcepción y perforación. Dado que sus características radiológicas son similares a la grasa, pueden ser visualizados mediante tomografía computarizada, aunque el diagnóstico definitivo se realiza mediante colonoscopia, donde se observa una masa grasa con forma ovalada y capacidad elástica. Las lesiones pueden ser extirpadas endoscópicamente o quirúrgicamente. La expulsión espontánea de un lipoma por vía rectal es rara y su mecanismo aún no está completamente comprendido. Aunque la literatura establece un punto de corte de 2 cm para decidir entre resección endoscópica o laparoscópica, la primera está en aumento y puede ampliar este límite. En casos grandes, como el reportado en este artículo, se recomienda una resección quirúrgica. Este caso particular se destaca por ser el lipoma de colon más grande reportado hasta ahora (13 cm) expulsado espontáneamente.

Intususcepción en adulto como complicación de un lipoma parietal intestinal Reporte de caso / Intussusception in an adult as a complication of an intestinal parietal lipoma. case report

Resumen La intususcepción en el adulto es una entidad clínica quirúrgica extremadamente rara, su etiología principal en esta población se atribuye generalmente a origen maligno, la patología benigna es de menor frecuencia y presenta un reto para el diagnóstico prequirúrgico, puesto que su presentación es inespecífica y variable. A continuación, se presenta un caso clínico que debuta con un cuadro clínico de dolor en hipocondrio derecho intermitente, manifestando agudización y resultados de estudios de laboratorio inespecíficos, por lo que inicialmente se pensó que la razón del dolor era una patología de origen biliar y, por ende, se realizó una ecografía de hígado y vías biliares, con lo que observaron signos sugestivos de intususcepción secundaria a un lipoma, por lo que se realizó una tomografía de abdomen simple que corroboró el diagnóstico.

Abstract Intussusception in adults is an extremely rare surgical clinical entity, its main etiology in this population is generally attributed to malignant origin, benign pathology is less frequent and presents a challenge for pre-surgical diagnosis, since its presentation is non-specific and variable. Below is a clinical case that debuted with a clinical picture of intermittent pain in the right upper quadrant, manifesting exacerbation and non-specific laboratory tests, for which initially pathology of biliary origin was thought to be the reason for the pain, and therefore, an ultrasound of the liver and bile ducts was performed, observing signs suggestive of intussusception secondary to a lipoma, for which a simple abdominal tomography was performed to corroborate the diagnosis.

Left paratesticular mass mimicking polyorchidism: A case report

We report a rare case of primary scrotal lipoma in a 20-year-old patient which clinically mimics a left triorchidism. The patients presented with the left testicular swelling and the ultrasonography of the scrotum revealed an inhomogeneous hyperechoic mass with an inconclusive report. The left scrotal hemi exploration was planned, and intraoperatively, it was found to be a paratesticular mass with an equivalent size corresponding to the left testicle, separate from the left testicle. The histopathology confirms the lipomatous swelling. The post-operative period remains uneventful and the patient has been on follow-up for the past 1 year with no relapse

Hamartoma lipomatoso pancreático: Reporte de caso y revisión de la literatura

Los hamartomas pancreáticos (HP) son lesiones no neoplásicas extremadamente inusuales y representan < 1% de todos los hamartomas. Además, existe una variante distintiva denominada Hamartoma Lipomatoso Pancreático (HLP), que es aún más raro, con solo 5 casos, incluyendo el presente reporte, descritos en la literatura. HLP carecen de características específicas y clínicamente puede ser confundido con otras lesiones lipomatosas pancreáticas, como lipoma, lipomatosis pancreática, PEComa, liposarcoma y tumores malignos con componentes lipomatosos. El presente reporte describe un caso de HLP en un paciente varón de 70 años, que aquejaba de dolor y masa abdominal, preoperatoriamente diagnosticado como tumor neuroendocrino de bajo grado no funcionante pancreático. Subsecuentemente, fue sometido a enucleación laparoscópica del tumor. El reporte patológico postoperatorio y los estudios de inmunohistoquímica confirmaron el diagnóstico de HLP.

Pancreatic hamartomas (PH) are extremely unusual non-neoplastic tumor-like lesions and accounts for <1% of all hamartomas. Moreover, there is a distinct variant of PH denominated Pancreatic lipomatous hamartoma (PLH), that is even rarer, with only 5 cases, including the present case, reported in the literature. PLH lacks well-defined features and clinically can be mistaken with other lipomatous lesions of the pancreas, including lipoma, pancreatic lipomatosis, PEComa, liposarcoma, and malignant tumors with lipomatous components. Here, we describe a case of PLH in a 70-year-old male with abdominal pain and a lesion, which was preoperatively diagnosed as a pancreatic no functional low-grade neuroendocrine tumor, and subsequent underwent a laparoscopic enucleation of the tumor. The postoperative pathology and immunohistochemical analyses confirmed the diagnosis of PLH.

EGFR, VEGF, and angiogenesis promote the development of lipoma in the oral cavity

Abstract This study aimed to detect, quantify and compare the immunohistochemical expression of EGFR and VEGF and microvessel count (MVC) in oral lipomas, and to correlate the findings with clinical and morphological characteristics of the cases studied. The sample consisted of 54 oral lipomas (33 classic and 21 non-classic) and 23 normal adipose tissue specimens. Cytoplasmic and/or nuclear immunohistochemical staining of EGFR and VEGF was analyzed. The angiogenic index was determined by MVC. Cells were counted using the Image J® software. The Statistical Package for the Social Sciences was used for data analysis, adopting a level of significance of 5% for all statistical tests. A statistically significant difference in EGFR immunoexpression (p=0.047), especially, between classic lipomas and normal adipose tissue. There was a significant difference in MVC between non-classic lipomas and normal adipose tissue (p=0.022). In non-classic lipomas, only VEGF immunoexpression showed a significant moderate positive correlation (r=0.607, p=0.01) with MVC. In classic lipomas, the number of EGFR-immunostained adipocytes was directly proportional to the number of VEGF-positive cells, demonstrating a significant moderate positive correlation (r=0.566, p=0.005). The results suggest that EGFR, VEGF, and angiogenesis participate in the development of oral lipomas but are not primarily involved in the growth of these tumors.

Resumo Lipomas são as neoplasias mesenquimais benignas mais comuns, no entanto sua etiopatogenia ainda permanece desconhecida. Dessa forma, essa pesquisa teve como objetivo detectar, quantificar e comparar a expressão imunoistoquímica do EGFR, VEGF e contagem microvascular (MVC) dos lipomas orais, relacionando-os com as características clínicas e morfológicas dos casos estudados. A amostra foi composta por 54 lipomas orais (33 clássicos e 21 não clássicos) e 23 casos de tecido adiposo normal. A análise da expressão imunoistoquímica de EGFR e VEGF foi fundamentada na marcação citoplasmática e/ou nuclear. O índice angiogênico foi avaliado por meio da MVC. A contagem de células foi realizada utilizando software IMAGE J®. Os dados obtidos foram analisados no software Statistical Package for Social Science. O nível se significância de 5% foi adotado para os testes estatístico. A análise da imunoexpressão das proteínas revelou para o EGFR diferença estatisticamente significativa (p=0,041) entre o lipoma clássico e o tecido adiposo normal. Houve diferença significativa na MVC entre lipomas não clássicos e tecido adiposo normal (p=0,022). Nos lipomas não clássicos, apenas a imunoexpressão de VEGF apresentou correlação do tipo moderada, positiva e significativa (r=0,607; p=0,010) em relação a MVC. Ademais, nos lipomas clássicos foi percebido que os adipócitos imunomarcados para EGFR estiveram diretamente proporcionais a imunoexpressão de VEGF, apresentando correlação do tipo moderada, positiva e estatisticamente significativa (r=0,566; p = 0,005). Com base nos resultados, pode-se sugerir que o EGFR, VEGFR e MCV participam do desenvolvimento nos lipomas orais, contudo, não estão primariamente envolvidos no crescimento tumoral dessas neoplasias.

Endoscopic submucosal dissection for symptomatic giant colonic lipomas / 中华消化内镜杂志

To evaluate the efficacy and safety of endoscopic submucosal dissection (ESD) for the treatment of symptomatic giant colonic lipomas (≥5 cm). Eight patients with giant colonic lipomas were treated with ESD at the Department of Digestive Endoscopy, Shanghai East Hospital from December 2018 to December 2021. The complete resection rate was 100% with the mean size of the resected lesion of 6.0 cm (ranging from 5.5 cm to 9.0 cm). The mean operation time of ESD was 41 minutes (ranging from 25 minutes to 80 minutes). Minimal bleeding were all successfully stopped with electrocoagulation and 2 small perforations were successfully sutured during the procedures. No abdominal pain, fever, delayed bleeding or perforation occurred after ESD. The mean hospital stay was 3 days (ranging from 3 days to 5 days). No residual or recurrence was found during the follow-up of 8-36 months. Thus, ESD is safe and effective for the treatment of giant colonic lipomas which can avoid surgical resection.

Invagination colo-colique sur lipome du cæcum chez l'adulte / Colocolic invagination on lipoma of the cecum in adults

L'invagination intestinale aiguë colocolique chez l'adulte est rare dans l'ordre de 5% des occlusions intestinales de l'adulte selon la littérature. Les causes sont organiques et l'invagination sur un lipome est exceptionnel. Nous rapportons un cas d'invagination colo-colique sur un lipome sous-muqueux du cæcum dans une forme pseudo tumorale chez une femme de 51 ans de découverte opératoire. La clinique était celle d'une occlusion intestinale sur une masse abdominale. Au plan thérapeutique, une hémicolectomie droite emportant la masse tumorale avec anastomose manuelle iléo-colique terminolatérale a été effectuée. L'histologique de la pièce opératoire était un lipome sous muqueux du cæcum. Les suites opératoires étaient simples. L'invagination colo-colique par lipome est rare. Le diagnostic étiologique est histologique et le traitement chirurgical

Acute colonic intussusception in adults is rare, accounting for around 5% of intestinal obstructions in adults according to the literature. The causes are organic and intussusception on a lipoma is exceptional. We report a case of colonic intussusception on a submucosal lipoma of the cecum in a pseudo-tumorous form in a 51-year-old woman discovered at surgery. The clinic was that of an intestinal obstruction on an abdominal mass. Therapeutically, a right hemicolectomy removing the tumor mass with manual endto-side ileocolic anastomosis was performed. The histology of the surgical specimen was a submucosal lipoma of the cecum. The postoperative course was simple. Colocolic intussusception due to lipoma is rare. The etiological diagnosis is histological and the treatment is surgical.

Extenso lipoma em localização incomum e com 10 anos de evolução: relato de caso / Extensive lipoma in unusual location and with 10 years of evolution: case report / Lipoma extenso en localización inusual y con 10 años de evolución: informe de un caso

O lipoma é um tumor benigno de gordura que representa a neoplasia mesenquimal mais comum e pode acometer a região de cabeça e pescoço. São mais frequentes em indivíduos obesos, entretanto, o metabolismo dos lipomas é independente da gordura corpórea normal. Caracterizam-se como aumentos de volume nodulares de superfície lisa e consistência macia que podem ser sesséis ou pedunculados, são normalmente assintomáticos e os sítios de acometimento menos comuns incluem a língua, o assoalho da boca e os lábios. Dessa forma, o presente artigo tem como objetivo relatar um caso clínico de lipoma com anos de evolução e localizado em uma região incomum. A paciente do sexo feminino foi encaminhada para a Clínica de Estomatologia da Faculdade de Odontologia do Campus UFC-Sobral relatando que apresentava a lesão desde o ano de 2010 e afirmando que nunca realizou tratamento prévio e que não havia fator causal conhecido. Ao exame clínico observou-se uma lesão nodular de cor amarelada, medindo cerca de 1,5cm localizada na região de borda lateral, ventre e dorso de língua do lado direito compatível com a hipótese diagnóstica de lipoma. Nesse sentido, a partir da anamnese e dos achados clínicos optou-se por realizar a biópsia excisional para confirmação do diagnóstico. Com os resultados da biópsia houve a comprovação da hipótese diagnóstica, e sendo assim, não houve necessidade de tratamentos adicionais. Portanto, a partir desse caso pode-se perceber que o lipoma pode ser uma lesão que pode perdurar por vários anos sem maiores complicações, entretanto pode atingir grandes dimensões e nesses casos o tratamento cirúrgico se faz necessário.

Lipoma is a benign fat tumor that represents the most common mesenchymal neoplasm and can affect the head and neck region. They are more frequent in obese individuals, however, the metabolism of lipomas is independent of normal body fat. They are characterized as smooth-surfaced nodular masses that can be sessile or pedunculated, are usually asymptomatic, and the less common sites of involvement include the tongue, the floor of the mouth, and the lips. Thus, the present article aims to report a clinical case of a lipoma with years of evolution and located in an uncommon region. The female patient was referred to the Stomatology Clinic of the School of Dentistry, UFC-Sobral Campus reporting that she presented the lesion since the year 2010 and stating that she had never undergone previous treatment and that there was no known causal factor. On clinical examination we observed a yellowish nodular lesion measuring about 1.5cm located in the region of the lateral border, belly and dorsum of the tongue on the right side compatible with the diagnostic hypothesis of lipoma. Therefore, based on the anamnesis and clinical findings, it was decided to perform an excisional biopsy to confirm the diagnosis. With the results of the biopsy, the diagnostic hypothesis was confirmed, and thus there was no need for additional treatments. Therefore, from this case we can see that lipoma can be a lesion that can last for several years without major complications, however, it can reach large dimensions and in these cases surgical treatment is necessary.

El lipoma es un tumor graso benigno que representa la neoplasia mesenquimatosa más frecuente y puede afectar a la región de cabeza y cuello. Son más frecuentes en individuos obesos, sin embargo, el metabolismo de los lipomas es independiente de la grasa corporal normal. Se caracterizan por ser masas nodulares de superficie lisa que pueden ser sésiles o pediculadas, suelen ser asintomáticas y los lugares menos frecuentes de afectación incluyen la lengua, el suelo de la boca y los labios. Así, el presente artículo pretende informar de un caso clínico de lipoma de años de evolución y localizado en una región poco frecuente. La paciente fue referida a la Clínica de Estomatología de la Facultad de Odontología, Campus UFC-Sobral informando que presentaba la lesión desde 2010 y afirmando que nunca había sido sometida a tratamiento previo y que no existía factor causal conocido. El examen clínico reveló una lesión nodular de color amarillento, de aproximadamente 1,5 cm localizada en la región del borde lateral, vientre y dorso de la lengua del lado derecho compatible con la hipótesis diagnóstica de lipoma. Por lo tanto, basándonos en la anamnesis y los hallazgos clínicos, decidimos realizar una biopsia excisional para confirmar el diagnóstico. Con los resultados de la biopsia se confirmó la hipótesis diagnóstica, por lo que no hubo necesidad de tratamiento adicional. Por lo tanto, a partir de este caso podemos ver que el lipoma puede ser una lesión que puede durar varios años sin mayores complicaciones, sin embargo, puede alcanzar grandes dimensiones y en estos casos es necesario el tratamiento quirúrgico.

Intraoral lipoma with degenerative changes mimicking atypical lipomatous tumor: an immunohistochemical study

ABSTRACT Lipomas are mesenchymal neoplasms relatively uncommon in the oral cavity. Lipomas can exhibit histopathological features mimicking atypical lipomatous tumors (ALT) or dysplastic lipoma (DL) in the presence of degenerative changes. Relevantly, immunohistochemistry assists in the correct diagnosis. Herein, we present the case of a 54-year-old male with a sessile nodule located on the dorsum of the tongue. The histopathological analysis showed a diffuse, non-circumscribed adipocytic proliferation constituted by cells of variable size containing cytoplasmic vacuoles and displaced nuclei, some resembling lipoblasts supported by fibrous connective tissue stroma. By immunohistochemistry, tumor cells were positive for vimentin, S100, FASN, CD10, and p16. Rb expression was intact. Moreover, CD34, p53, MDM2, and CDK4 were negative. After 2-year of follow-up, no alteration or recurrence was observed. In conclusion, MDM2, CDK4, p53, and Rb immunomarkers can be used reliably to differentiate benign lipoma with degenerative changes from ALT and DL.

Lipoma de recto prolapsado e incarcerado: caso clínico y análisis de la literatura / Prolapsed and incarcerated rectal lipoma: case report and literature review / Prolapso e encarceramento de lipoma do reto: caso clínico e análise da literatura

Los lipomas colónicos son tumores benignos poco frecuentes, extremadamente raros a nivel rectal. A pesar de ello, ocupan el segundo lugar en frecuencia detrás de los pólipos adenomatosos. Aunque la mayoría de los lipomas colorrectales son asintomáticos y se descubren incidentalmente, en ocasiones pueden ser sintomáticos y determinar complicaciones agudas que requieren tratamiento quirúrgico de urgencia. Estas formas de presentación pueden confundirse con las del cáncer colorrectal, constituyendo un desafío diagnóstico y terapéutico. Presentamos el caso de una paciente que consultó en emergencia por una gran masa dolorosa de aparición aguda a nivel del ano, resultando ser un lipoma rectal prolapsado a través del canal anal.

Colonic lipomas are infrequent benign tumors, extremely rare at the rectum. Nevertheless, they follow in frequency polyp adenomas. Even though most colorectal lipomas are asymptomatic and incidental, they can occasionally be symptomatic and develop acute complications that require urgent surgical treatment. This form of presentation can be confounded with colorectal cancer, therefore impairing diagnosis and treatment. We present the case of a female patient who came to the emergency room with an acute painful mass through the anus, that resulted in a prolapsed rectal lipoma.

Os lipomas colônicos são tumores benignos pouco frequentes, extremamente raros no nível retal. Apesar disso, ocupam o segundo lugar em frequência atrás dos pólipos adenomatosos. Embora a maioria dos lipomas colorretais sejam assintomáticos e descobertos incidentalmente, às vezes eles podem ser sintomáticos e levar a complicações agudas que requerem tratamento cirúrgico de emergência. Essas formas de apresentação podem ser confundidas com as do câncer colorretal, constituindo um desafio diagnóstico e terapêutico. Apresentamos o caso de um paciente que consultou na sala de emergência por uma grande massa dolorosa de início agudo ao nível do ânus, que acabou por ser um lipoma retal prolapsado pelo canal anal.

AN UNUSUAL PRESENTATION OF LIPOMA ON THE CHEST

Intramuscular lipoma of the chest wall is a rare finding. We present the case of a 51years male who presented to the hospital with mass on the left side of the chest which was gradually progressive in size. After re- evaluation swelling was round in shape, single with well-defined margin and rubbery consistency. Preoperative imaging HRCT thorax was done which suggested a well-defined round, hypodense, non-enhancing space occupying lesion (10.2x 8.6 x2.3cm) with volume of approximately 100ml noted in the muscle of the chest wall (pectoralis major to pectoralis minor) in the left side of the chest most likely lipoma. Histopathology revealed normal adipocytes with small eccentric nucleus.