title: Hereditary hemorrhagic telangiectasia: multi-detector row helical CT assessment of hepatic involvement.
abstract: OBJECTIVE
  To describe findings obtained with multi-detector row helical computed tomography (CT) of the liver in patients with hereditary hemorrhagic telangiectasia.
  
  
  METHODS
  Multiphasic multi-detector row helical CT was performed in 70 consecutive patients (29 females and 41 males; mean age, 48.5 years; age range, 15-75 years): 64 considered to have hereditary hemorrhagic telangiectasia and six suspected of having the disease. Scanning delay was achieved by using a test bolus of contrast medium to obtain early arterial phase, late arterial phase, and portal venous phase images. Multiplanar and angiographic reconstructions were then generated. The presence of shunts, hepatic perfusion disorders, telangiectases, other vascular lesions, indirect signs of portal hypertension, and vascular anatomic variants were evaluated by two radiologists in consensus.
  
  
  RESULTS
  Fifty-two of 70 (74%) patients had hepatic vascular abnormalities. Only four of 52 (8%) patients were symptomatic. Arterioportal shunts were present in 27 of 52 (52%) patients, arteriosystemic shunts in eight of 52 (15%), and both shunt types in 17 of 52 (33%). In 34 of 52 (65%) patients, parenchymal perfusion disorders were detected. Telangiectases were found in 33 of 52 (63%) patients. Large confluent vascular masses were identified in 13 of 52 (25%) patients. In 31 of 52 (60%) patients, indirect CT signs of portal hypertension were detected, but only one had clinical signs of this condition. Vascular anatomic variants were detected in seven patients (13%).
  
  
  CONCLUSIONS
  Multi-detector row helical CT and reconstructions depict the complex hepatic vascular alterations typical of hereditary hemorrhagic telangiectasia.
authors.affiliation: Department of Radiology and HHT Centre, University Hospital, Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy.
authors.forename: Amato Antonio Stabile
authors.initials: AA
authors.lastname: Ianora
authors.forename: Maurizio
authors.initials: M
authors.lastname: Memeo
authors.forename: Carlo
authors.initials: C
authors.lastname: Sabba
authors.forename: Anna
authors.initials: A
authors.lastname: Cirulli
authors.forename: Antonio
authors.initials: A
authors.lastname: Rotondo
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Angelelli
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000000981:diagnostic imaging / Q000209:etiology; D008099:Liver / Q000098:blood supply / Q000000981:diagnostic imaging; D008107:Liver Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D013683:Telangiectasia, Hereditary Hemorrhagic / Q000150:complications / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed