Journal of Pathology and Translational Medicine

Case Report

Retroperitoneal Duplication Cyst Associated with Heterotopic Pancreas: A case report.: So Yeong Oh, Myoung Ja Chung, Dong Geun Lee, Ho Yeul Choi; Korean J Pathol. 1998;32(9):687-690.

Abstract: Occurrence of a retroperitoneal duplication cyst associated with a heterotopic pancreas is rare. We report a case of a retroperitoneal duplication cyst associated with a heterotopic pancreas. A 35-year-old male was admitted, presenting with back pain. A pelvic computed tomographic scan disclosed a 10 cm-sized cystic mass filling the lower pelvis and displacing the rectosigmoid colon anteriorly. Histologically, the cyst wall was lined partly by mucin-secreting columnar epithelium, showing atypical hyperplasia and partly by a gastric fundic-type and a colonic-like mucosa. Beneath the epithelium, organized bundles of smooth muscle were arranged in two layers analogous to smooth muscles layers of the bowel and a small piece of pancreatic tissue were present in the smooth muscle wall of the cyst.

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