title: Rare cause of abdominal incidentaloma: Hepatoduodenal ligament teratoma.
abstract: 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. Intraoperative 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 imaging, such as computed tomography, can reveal suspected incidences of this rare type of teratoma, which can then be confirmed after pathologic analysis of the specimen. The prognosis after complete surgical resection of lesions presenting with benign pathological features is excellent.
authors.affiliation: Vagner Birk Jeismann, Rodrigo Blanco Dumarco, Ricardo Correa Barbuti, José Jukemura, Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, SP 05403-900, Brazil.
authors.forename: Vagner Birk
authors.initials: VB
authors.lastname: Jeismann
authors.affiliation: Vagner Birk Jeismann, Rodrigo Blanco Dumarco, Ricardo Correa Barbuti, José Jukemura, Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, SP 05403-900, Brazil.
authors.forename: Rodrigo Blanco
authors.initials: RB
authors.lastname: Dumarco
authors.affiliation: Vagner Birk Jeismann, Rodrigo Blanco Dumarco, Ricardo Correa Barbuti, José Jukemura, Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, SP 05403-900, Brazil.
authors.forename: Celso di
authors.initials: Cd
authors.lastname: Loreto
authors.affiliation: Vagner Birk Jeismann, Rodrigo Blanco Dumarco, Ricardo Correa Barbuti, José Jukemura, Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, SP 05403-900, Brazil.
authors.forename: Ricardo Correa
authors.initials: RC
authors.lastname: Barbuti
authors.affiliation: Vagner Birk Jeismann, Rodrigo Blanco Dumarco, Ricardo Correa Barbuti, José Jukemura, Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, SP 05403-900, Brazil.
authors.forename: José
authors.initials: J
authors.lastname: Jukemura
keywords: Abdominal incidentaloma; Hepatobiliary surgery; Hepatoduodenal ligament; Surgery; Teratoma