Rare cause of abdominal incidentaloma: Hepatoduodenal ligament teratoma

The occurrence of a hepatoduodenal ligament teratoma is extremely rare,with only a few cases reported in the literature.This case report describes the discovery of a hepatoduodenal ligament lesion revealed during abdominal ultrasonography for cholelithiasis-related abdominal pain in a 27-year-old female.Cross-sectional imaging identified a 5 cm×4 cm heterogeneous mass of fat tissue with irregular calcification located in the posterior-superior aspect of the head of the pancreas.An encapsulated lesion showing no invasion to the common bile duct or adjacent organs and vessels was exposed during laparotomy and resected.Intraop-erative cholangiography during the cholecystectomy showed no abnormalities.The postoperative course was uneventful.Pathological analysis of the resected mass indicated hepatoduodenal ligament teratoma.This case report demonstrates that cross-sectional im-aging,such as computed tomography,can reveal sus-pected incidences of this rare type of teratoma,which can then be confirmed after pathologic analysis of the specimen.The prognosis after complete surgical resec-tion of lesions presenting with benign pathological fea-tures is excellent.