ISSN:
1432-1084
Keywords:
Key words: Portal vein, abnormalities – Portal vein, anatomy – Portal vein, ultrasound – Portal vein, magnetic resonance
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract. Two cases of agenesis of the horizontal segment of the left portal vein are reported. This very rare vascular anomaly probably corresponds to an embryological variation rather than to an obstruction of the left portal vein. In almost all cases liver ultrasonography is sufficient for identifying such vascular abnormalities. It shows a large aberrant vessel emerging from a right anterior segmental portal branch and running transversely in the quadrate lobe towards the teres ligamentum from which the portal supply to the left lobe arises. It is important to be able to recognize the magnetic resonance imaging features of this vascular variation, as magnetic resonance imaging may be the initial imaging study, and ultrasound may be technically challenging. To our knowledge, we present the first description of these features, including an enhanced gradient-echo T1-weighted sequence, a turbo spin-echo T2-weighted sequence with fat saturation, and a three-dimensional phase-contrast magnetic resonance portography.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003300050057
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