Resumen: Background: In Cystic Pneumatosis Intestinalis, intramural gas filled cysts are formed in the gastrointestinal wall. Its pathogenesis is unknown and its clinical manifestations are variable. Case report: We report a 33 years old HIV positive woman in retroviral treatment presenting with abdominal pain and signs of peritoneal irritation. An abdominal CT scan showed intra and retroperitoneal gas and pneumatosis intestinalis in the right and transverse colon. The patient was managed conservatively with nasogastric aspiration with a favorable evolution and was discharged ten days after admission. Idioma: Español DOI: 10.4067/S0718-40262014000600012 Año: 2014 Publicado en: REVISTA CHILENA DE CIRUGIA 66, 6 (2014), 583-585 ISSN: 0379-3893 Tipo y forma: Artículo (Versión definitiva) Área (Departamento): Cirugía (Departamento de Cirugía, Ginecología y Obstetricia)