title: Prominent collateral vein in portal hypertension mimicking liver tumours: a pitfall in computed tomography.
abstract: Computed tomography (CT) was performed on four patients with a prominent porto-systemic collateral vein, including three with an enlarged para-umbilical vein. We have observed a pitfall in non-contrast CT scans of patients with portal hypertension, in which a prominent collateral vein may mimic a liver tumour. Dynamic CT as well as magnetic resonance imaging is of great value in such cases.
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000000981:diagnostic imaging* / Q000473:pathology; D008099:Liver / Q000000981:diagnostic imaging; D008113:Liver Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D010690:Phlebography; D011169:Portal Vein / Q000473:pathology; D014057:Tomography, X-Ray Computed