title: Focal spared area in fatty liver mimicking a tumor.
abstract: A focal fatty liver change may be associated with several conditions related to diffuse hepatic steatosis, such as a diffuse fatty liver change. Using ultrasonography, the focal fatty liver change appears more frequently as hyperechoic and less frequently as hypoechoic areas in the liver. We report a rare case of a focal fatty liver change in which an area was spared in fatty liver. The patient was a 42-year-old man. Abdominal ultrasonography showed focal hypoechogenicity with an irregular margin in S8 within a bright liver. Abdominal computed tomography and enhanced computed tomography showed a high-density mass in S8 of the right lobe. A microscopic examination of the specimens from the liver biopsy from the hypoechoic region revealed normal hepatic parenchymal cells, while tissue samples from the surrounding liver had a high fat deposition.
authors.affiliation: First Department of Internal Medicine, Mie University School of Medicine 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Fujikawa
authors.forename: Katsuya
authors.initials: K
authors.lastname: Shiraki
authors.forename: Takeshi
authors.initials: T
authors.lastname: Ito
authors.forename: Koujiro
authors.initials: K
authors.lastname: Takase
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakano
mesh_terms: D000328:Adult; D005234:Fatty Liver / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008099:Liver / Q000000981:diagnostic imaging / Q000473:pathology*; D008113:Liver Neoplasms / Q000175:diagnosis*; D008297:Male; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography