FIG 1. CT findings of ascending lumbar vein passing through a lumbar (L3) pedicular foramen.

A, Axial CT scan shows a foramen (long arrow) in the right pedicle of the L3 vertebra containing the right ascending lumbar vein (short arrow). Note paravertebral course of left ascending lumbar vein (arrowhead).

B, Coronal reformatted scan shows passage of right ascending lumbar vein (short arrow) through the pedicular foramen (long arrow).

C and D, Axial and coronal volume-rendered scans show anatomic location of pedicular foramen (long arrow) and its relation to ascending lumbar vein (short arrow) to a better extent.