Portal vein occlusion or stenosis in patients with hepatolithiasis: Observation by multiphasic contrast-enhanced CT

T. Tajima, K. Yoshimitsu, H. Irie, H. Aibe, K. Shinozaki, Akihiro Nishie, Yoshiki Asayama, Tomohiro Nakayama, Daisuke Kakihara, Hiroshi Honda

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Abstract

Aims: To analyze the dynamic findings of multiphasic contrast-enhanced CT in hepatolithiasis and to elucidate occlusive changes in portal veins and other associated abnormalities. Methods: This was a retrospective study of 25 selected patients with hepatolithiasis who underwent various imaging examinations, including multiphasic contrast-enhanced CT. The following CT findings were evaluated in each of 71 hepatic segments: visualization of a calculus; biliary dilation or focal hepatic atrophy of the affected segment; areas that were abnormally enhanced in the hepatic arterial phase; degrees (normal, stenosis, occlusion) of portal vein calibre; and linear delayed enhancement along the bile-duct walls, suggesting cholangitis. Results: On CT, calculi were depicted as a hyperdense structures in 61 of 71 segments (86%). Focal hepatic atrophy, which frequently accompanied CT findings suggesting compensatory hypertrophy of other segments, was seen in 50 of 71 segments (70%). Areas that were abnormally enhanced were recognized in 36 of 71 segments (51%). Stenosis or occlusion of portal venous branches was observed in 59 of 71 segments (83%), including 13 segments with occlusion. Findings indicating cholangitis were noted in 50 of 71 segments (70%). The degrees of portal vein calibre were significantly correlated with the presence of hepatic atrophy or cholangitis. Conclusion: Hepatolithiasis is associated with significant rates of stenosis or occlusion of adjacent portal veins as well as hepatic parenchymal changes in the affected area. Chronic deterioration of portal flow may cause these morphological changes.

Original languageEnglish
Pages (from-to)469-478
Number of pages10
JournalClinical Radiology
Volume60
Issue number4
DOIs
Publication statusPublished - Apr 1 2005

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Portal Vein
Pathologic Constriction
Observation
Cholangitis
Liver
Atrophy
Calculi
Bile Ducts
Hypertrophy
Dilatation
Retrospective Studies

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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Portal vein occlusion or stenosis in patients with hepatolithiasis : Observation by multiphasic contrast-enhanced CT. / Tajima, T.; Yoshimitsu, K.; Irie, H.; Aibe, H.; Shinozaki, K.; Nishie, Akihiro; Asayama, Yoshiki; Nakayama, Tomohiro; Kakihara, Daisuke; Honda, Hiroshi.

In: Clinical Radiology, Vol. 60, No. 4, 01.04.2005, p. 469-478.

Research output: Contribution to journalArticle

Tajima, T. ; Yoshimitsu, K. ; Irie, H. ; Aibe, H. ; Shinozaki, K. ; Nishie, Akihiro ; Asayama, Yoshiki ; Nakayama, Tomohiro ; Kakihara, Daisuke ; Honda, Hiroshi. / Portal vein occlusion or stenosis in patients with hepatolithiasis : Observation by multiphasic contrast-enhanced CT. In: Clinical Radiology. 2005 ; Vol. 60, No. 4. pp. 469-478.
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AU - Aibe, H.

AU - Shinozaki, K.

AU - Nishie, Akihiro

AU - Asayama, Yoshiki

AU - Nakayama, Tomohiro

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N2 - Aims: To analyze the dynamic findings of multiphasic contrast-enhanced CT in hepatolithiasis and to elucidate occlusive changes in portal veins and other associated abnormalities. Methods: This was a retrospective study of 25 selected patients with hepatolithiasis who underwent various imaging examinations, including multiphasic contrast-enhanced CT. The following CT findings were evaluated in each of 71 hepatic segments: visualization of a calculus; biliary dilation or focal hepatic atrophy of the affected segment; areas that were abnormally enhanced in the hepatic arterial phase; degrees (normal, stenosis, occlusion) of portal vein calibre; and linear delayed enhancement along the bile-duct walls, suggesting cholangitis. Results: On CT, calculi were depicted as a hyperdense structures in 61 of 71 segments (86%). Focal hepatic atrophy, which frequently accompanied CT findings suggesting compensatory hypertrophy of other segments, was seen in 50 of 71 segments (70%). Areas that were abnormally enhanced were recognized in 36 of 71 segments (51%). Stenosis or occlusion of portal venous branches was observed in 59 of 71 segments (83%), including 13 segments with occlusion. Findings indicating cholangitis were noted in 50 of 71 segments (70%). The degrees of portal vein calibre were significantly correlated with the presence of hepatic atrophy or cholangitis. Conclusion: Hepatolithiasis is associated with significant rates of stenosis or occlusion of adjacent portal veins as well as hepatic parenchymal changes in the affected area. Chronic deterioration of portal flow may cause these morphological changes.

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