Huge mesenteric cyst: Pelvic cysts differential diagnoses dilemma

IntroductionSimple mesothelial cyst is a rare mesenteric cyst of mesothelial origin. The size is up to 10 cm. It is usually asymptomatic, but occasionally non-specific symptoms, which makes correct preoperative diagnosis difficult.Case presentationA 30-year-old woman presented with abdominal discomfort and distention to our hospital. Examination revealed soft abdominal mass. The laboratory examination was unremarkable. Abdominal imaging showed a huge cystic mass of 30 cm. Excision of the cyst was performed by midline laparotomy. The histopathological diagnosis was simple mesothelial cyst.ConclusionPeritoneal simple mesothelial cyst is a quite rare abdominal tumor, that must be considered in differential diagnosis of pelvic cystic lesions. The treatment of choice is surgical excision of the cyst.