Pelvic Rectal Stercoral Perforation Resulting in Diffuse Pneumatosis

An 83-year-old woman with oral corticosteroid use for chronic autoimmune conditions presented with abdominal pain and constipation for the previous seven days. CT of the abdomen and pelvis revealed a large fecaloma with diffuse pneumatosis involving the retroperitoneum, subcutaneous tissue, and mediastinum. An emergent exploratory laparotomy revealed perforation of the rectum below the peritoneal reflection into the retroperitoneum. An end-colostomy with Hartmann's operation was then performed intra-operatively. Despite operative treatment complicated by prolonged intubation, the patient succumbed to multiorgan failure and expired.