Prevalence and types of main and right portal vein branching variations on MDCT.
AJR Am J Roentgenol
; 187(3): 676-81, 2006 Sep.
Article
en En
| MEDLINE
| ID: mdl-16928929
ABSTRACT
OBJECTIVE:
Our objective was to investigate the prevalence of variant main and right portal vein ramification in a large group of patients. SUBJECTS ANDMETHODS:
The study group consisted of 200 patients who underwent consecutive contrast-enhanced abdominal CT examinations performed with an 8-MDCT scanner. Two observers evaluated both thin axial sections and 3D maximum-intensity-projection and volume-rendered images for branching patterns of the main and right portal veins.RESULTS:
Conventional main portal vein anatomy was present in 64.5% of the patients. In 9.5% of the patients, the main portal vein trifurcated into the left portal and right anterior and posterior portal veins. In 23.5% of the patients, the main portal vein divided into a common left portal vein-right anterior portal vein trunk and the right posterior portal vein. Three patients (1.5%) had miscellaneous variations. Twenty-two (16.8%) of 131 patients with conventional main portal vein branching had variant right portal vein branching, most of which was a trifurcation, followed by an abnormally proximal origin of the segment VII vein from the right portal vein.CONCLUSION:
Variant main portal vein branching seems to be very frequent. Common right anterior portal vein-left portal vein trunk is far more common than trifurcation. Although less frequent, variations also occur in right portal vein branching.
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Banco de datos:
MEDLINE
Asunto principal:
Vena Porta
Tipo de estudio:
Incidence_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adolescent
/
Adult
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Aged
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Aged80
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Child
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Año:
2006
Tipo del documento:
Article