CT periportal halo sign in dogs-comparison with human medicine

Abstract

Periportal halo CT sign has been well described in human medicine, being associated with multiple pathological processes (hepatobiliary, congestive heart failure, pyelonephritis, metastases) but also with fluid resuscitation and blunt abdominal trauma. It is supposed to be caused by periportal lymphangiectasia and may be related with primary or secondary liver diseases. The aim of the article is to review and analyse CT findings of periportal halo in dogs and possible relations with systemic diseases and abnormal liver function parameters.