title: F-18 FDG PET/CT findings in two patients with hepatic angiomyolipoma with and without intratumoral hemorrhage.
abstract: Two female patients aged 62 and 74 years underwent F-18 FDG PET/CT for evaluation of a large hepatic tumor. Subsequently, both patients underwent a partial hepatectomy which histopathologically revealed benign hepatic angiomyolipomas (AMLs). One patient with AML with a massive intratumoral hemorrhage presented with multiple foci demonstrating an increased FDG uptake along the margin of the cold defects that corresponded to low density areas within the tumor on contrast-enhanced CT, whereas the other patient with AML without any hemorrhage presented with a low FDG uptake in the tumor. This report demonstrates that benign hepatic AMLs may demonstrate increased FDG uptake if there is hemorrhage and a related inflammatory response.
authors.affiliation: Department of Radiology, Graduate School of Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan. takanami@rad.med.tohoku.ac.jp
authors.forename: Kentaro
authors.initials: K
authors.lastname: Takanami
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kaneta
authors.forename: Shin
authors.initials: S
authors.lastname: Hitachi
authors.forename: Takayuki
authors.initials: T
authors.lastname: Yamada
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Ishida
authors.forename: Toshiki
authors.initials: T
authors.lastname: Rikiyama
authors.forename: Yu
authors.initials: Y
authors.lastname: Katayose
authors.forename: Michiaki
authors.initials: M
authors.lastname: Unno
authors.forename: Shogo
authors.initials: S
authors.lastname: Yamada
authors.forename: Shoki
authors.initials: S
authors.lastname: Takahashi
mesh_terms: D000368:Aged; D018207:Angiomyolipoma / Q000150:complications / Q000175:diagnosis*; D005260:Female; D019788:Fluorodeoxyglucose F18; D006470:Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008113:Liver Neoplasms / Q000150:complications / Q000175:diagnosis*; D008875:Middle Aged; D049268:Positron-Emission Tomography / Q000379:methods*; D019275:Radiopharmaceuticals; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18