Ultrasound demonstration of variations in normal portal vein diameter with posture.
The portal vein diameter has been measured in 100 fasting patients in both the supine and left lateral decubitus positions. We have demonstrated that the vessel diameter increases by up to 100% in the latter position. The significance of this finding is discussed.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000033:anatomy & histology*; D011187:Posture; D014463:Ultrasonography