Intussusception of Heterotopic Gastric Mucosa in the Transverse Colon: A Rare Cause of Perforation and Bleeding.

Heterotopic gastric mucosa in the colorectal region is a rare condition and can be found throughout the gastrointestinal tract. Intussusception in adults is mostly associated with adenocarcinoma and requires prompt surgical intervention, especially in cases of intestinal perforation. Our case report demonstrates a cecal perforation caused by the intussusception of heterotopic gastric mucosa within the transverse colon. The patient presented with substantial hematochezia. Despite the challenges of diagnosing this condition preoperatively and in the ICU, accurate pathologic evaluation is important. The consideration of a heterotopic gastric mucosa is crucial in cases of persistent hematochezia, especially in cases of intussusception. The postoperative course of the patient was characterized by hematochezia, which improved with proton pump inhibitors. The consideration of the possibility of heterotopic gastric mucosa may be a guide to appropriate surgical management and optimization of patient outcomes.