Rectal Lipoma in an Elderly Male: A Case Report

Abstract

Lipomas of the gastrointestinal tract are uncommon, benign non-epithelial tumors detected incidentally during surgery or endoscopy. Rectal lipomas are extremely rare. Patients may be asymptomatic or present with rectal bleeding, constipation, tenesmus and signs of intestinal obstruction. Preoperative diagnosis is challenging. Management consists of simple observation, endoscopic or laparoscopic removal, and open surgery. We present a case of an elderly male admitted to the Department of Surgery of a general hospital in Crete, complaining of a protruding rectal mass during defecation. CT raised the diagnostic suspicion. The mass was removed by trans-anal excision. Histopathology of the resected specimen confirmed the diagnosis. The patient had an uneventful postoperative course and was discharged home at the second postoperative day.

Colonic lipoma mimicking malignancy and presenting as an intussusception: A rare case report

“…Colonoscopy may allow direct visualization of the submucosal lipoma, and several characteristic endoscopic features have been described, including the “tenting sign” (grasping the overlying mucosa), “cushion sign” (flattening and restoration of the shape of the lipoma), and the “naked fat sign” (extrusion of fat after biopsy of the colonic mucosa) [ 12 , 13 ]. A colonoscopic biopsy is usually performed to confirm the nature of the tumor.…”

Lipoma de recto prolapsado e incarcerado: caso clínico y análisis de la literatura

“…En el recto, son extremadamente raros. En un análisis de 17 pacientes con lipomas colónicos observados en un período de 18 años, la localización rectal solo se reportó en tres pacientes, 7 lo que hace interesante este caso clínico. Generalmente son lesiones únicas, aunque la forma múltiple está presente hasta en un 14-25% de los casos.…”

“…Durante la toma de biopsia, el tejido graso puede protruir a través del sito puncionado, dando lugar al "signo de la grasa desnuda" (naked fat sign), que orienta al diagnóstico. 7 La endoscopia con imagen de banda estrecha (NBI: narrow band imaging) constituye un importante adelanto en la endoscopia diagnóstica actual, ya que permite obtener más información sobre la mucosa gastrointestinal: por un lado, destaca cambios sutiles de la mucosa y por otro, permite observar su estructura íntima y el patrón vascular, gracias a un filtro de luz de banda estrecha que proporciona imágenes de gran contraste. 13 La endomicroscopía láser confocal (CLE: confocal laser endomicroscopy) es una técnica óptica que permite la caracterización citológica in vivo de un tejido.…”