Florencia Lucero-Serrano, Departamento de Cirugía, Centro Médico ABC Santa Fe, Cuajimalpa, Ciudad de México, México
Antonio Herrera-González, Departamento de Cirugía, Centro Médico ABC Santa Fe, Cuajimalpa, Ciudad de México, México
Carlos Valenzuela-Salazar, Departamento de Cirugía, Centro Médico ABC Santa Fe, Cuajimalpa, Ciudad de México, México
Óscar E. Sánchez-Castro, Departamento de Patología, Centro Médico ABC Observatorio, Álvaro Obregón. Ciudad de México, México
Carlos Zerrweck, Departamento de Cirugía, Centro Médico ABC Santa Fe, Cuajimalpa, Ciudad de México, México

A rare condition, sclerosing encapsulating peritonitis, is characterized by a fibrotic membrane forming over the bowels, leading to intestinal obstruction. In this case of a 56-year-old male patient with a history of laparoscopic gastric bypass, a computed tomography scan showed findings indicative of the condition. Extensive adhesiolysis was performed, and biopsies confirmed the presence of fusiform cells (D2-40 positive on immunochemistry) resembling fibroblasts, within dense collagenous peritoneal tissue sheets, typical of sclerosing encapsulating peritonitis. The prevalence of this condition is uncertain, and diagnosis typically requires a peritoneal biopsy due to the nonspecific clinical presentation.

Keywords: Sclerosing encapsulating peritonitis. Laparotomy. Adhesiolysis. Gastric bypass surgery.