MCQ – 86882

A 58-year-old man is presented with edema of the lower limb and enlarged superficial veins of the abdominal wall. Examination of radiographs and angiograms reveal obstruction of the IVC just proximal to the entrance of the renal vein. This venous blockage may result in dilation of which of the following veins?

Correct Answer � A Explanation

• The veins distal to obstruction are dilated, but the veins proximal to obstruction are not dilated but have low blood pressure.
• The suprarenal vein drains into the left renal vein and thus is dilated because of high pressure. The right phrenic and right hepatic veins drain into the IVC above the obstruction.
• The left gastric vein joins the portal vein, which enters the liver.