Case Report of Cystic Mesenteric Lymphangioma as a Cause of Small Bowel Obstruction in an Adult with a Virgin Abdomen.

Background and Clinical Significance: Cystic mesenteric lymphangiomas are rare benign growths of the mesenteric lymphatic vessels. This entity poses a diagnostic dilemma due to the wide array of symptoms with which patients present. Usually, these patients are diagnosed before the age of 5 years old. Case Presentation: In this report, we present a young adult male with longstanding gastrointestinal complaints and a small bowel obstruction who subsequently underwent exploratory laparotomy with significant bowel resection, and pathology revealed a diagnosis of cystic mesenteric lymphangioma. Conclusions: The presence of small bowel obstruction without prior abdominal surgeries should raise suspicion of congenital pathologies and warrants prompt surgical intervention.