A Missing Posterior Division of the Internal Iliac Artery

To date, multiple variations in the pelvic vasculature have been reported. In this case report, a rare, so far unreported, branching anomaly of the internal iliac artery on the left side of a male human pelvis is described.

The complete posterior division of the internal iliac artery was shown to be missing on dissection of a 73 year old male cadaver. The iliolumbar artery, the lateral sacral arteries, and the superior gluteal artery originated unilaterally (on the left pelvis) directly from the common iliac artery.

No alteration was observed in the supplied structures of the left pelvic region, including the respective muscles, the sacrum, or the hip joint.