title: Peliosis Hepatis Shows Isometabolism on (18)F-FDG PET/CT: Two Case Reports.
abstract: Peliosis hepatis (PH) is a rare benign disease that is characterized by multiple blood-filled cystic spaces in the hepatic parenchyma. It is also characterized by a range of radiologic findings that might mimic various diseases, including metastatic liver disease and hepatocellular carcinoma. The findings of PH on (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) are not well reported. We here report two cases of biopsy-proven PH. Both patients had been treated for cancer (advanced gastric carcinoma and rectal adenocarcinoma), and follow-up CT of both cases revealed hepatic lesions with the possibility of metastasis. Examination of (18)F-FDG PET/CT images suggested that the lesions were isometabolic, having metabolism similar to that of adjacent hepatic parenchyma. The outcomes of hepatic core-needle biopsies were consistent with peliosis hepatis.
authors.affiliation: Departments of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736 South Korea.
authors.forename: Minjung
authors.initials: M
authors.lastname: Seo
authors.affiliation: Departments of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736 South Korea.
authors.forename: Suk Hyun
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Departments of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736 South Korea.
authors.forename: Sangwon
authors.initials: S
authors.lastname: Han
authors.affiliation: Departments of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736 South Korea.
authors.forename: Changhwan
authors.initials: C
authors.lastname: Sung
authors.affiliation: Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors.forename: Da Hye
authors.initials: DH
authors.lastname: Son
authors.affiliation: Departments of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736 South Korea.
authors.forename: Jong Jin
authors.initials: JJ
authors.lastname: Lee
keywords: 18F-FDG; Biopsy; PET; Peliosis hepatis