An Isolated Enteric Duplication Cyst With Mucinous Neoplasm Presenting as a Mesenteric Cyst: A Case Report

Enteric duplication cysts (EDCs) are infrequent intraabdominal lesions, though they can be detected anywhere throughout the gastrointestinal tract. Rarely, they can be asymptomatic and encountered in adulthood. Completely isolated EDCs are rarer with malignant transformation inside the cyst. Herein, we report a unique case of a mucinous neoplasm that developed in an isolated EDC in an adult patient treated with surgical resection and provide detailed radiological and histopathological findings.