title: Cavernous hemangioma with extensive sclerosis masquerading as intrahepatic cholangiocarcinoma - A pathologist's perspective.
abstract: A patient presented with an acute episode of bright red blood in her stool. The incidental liver mass seen in segment 4 was suspected to represent a cholangiocarcinoma due to associated mild intrahepatic biliary ductal dilatation and suspicion for capsular retraction. Pathology confirmed that this lesion represented a sclerosing hemangioma. This case report corroborates prior observations that degenerative changes in hemangiomas-sclerosis, narrowing of vascular channels, thrombosis, infarct, hemorrhage-may produce atypical radiographic findings. Since these atypical radiographic features may suggest a primary or metastatic malignancy, the protean appearance of hemangiomas remains an important consideration in the evaluation of hepatic masses.
authors.affiliation: Department of Pathology, University of Washington, Seattle WA.
authors.forename: Nicole K
authors.initials: NK
authors.lastname: Andeen
authors.affiliation: Department of Radiology, University of Washington, Seattle WA.
authors.forename: Puneet
authors.initials: P
authors.lastname: Bhargava
authors.affiliation: Department of Surgery, University of Washington, Seattle WA.
authors.forename: James O
authors.initials: JO
authors.lastname: Park
authors.affiliation: School of Medicine, University of Washington, Seattle WA.
authors.forename: Mariam
authors.initials: M
authors.lastname: Moshiri
authors.affiliation: Department of Pathology, University of Washington, Seattle WA.
authors.forename: Maria
authors.initials: M
authors.lastname: Westerhoff