Isolated omental teratoma in a male in early adolescence with normal testes

A male in early adolescence presented with a 6-month history of a progressively enlarging upper abdominal mass. Ultrasonography and contrast-enhanced CT suggested a mature cystic teratoma of the greater omentum. Laparotomy confirmed a multicystic omental mass, and histopathology revealed mature tissues from all three germ layers, confirming a benign teratoma. Complete surgical excision was curative, with no recurrence at 5-year follow-up. This case, one of only three reported omental teratomas in males with normal testes, highlights the importance of considering this rare diagnosis for abdominal masses, the critical role of imaging in preoperative assessment and the efficacy of surgical resection for excellent outcomes.