Figure 2.

(A) An abnormal fluid collection, on a postoperative basis, is seen posterior to the left iliopsoas and the external iliac artery and vein (white arrow). Note the sizable branches of the left internal iliac vessels posteriorly (black arrow). (B) Chosen needle (star) path between the left external iliac vessels and the iliopsoas musculature within which lies the iliac circumflex artery and vein (black arrow). There was no associated vascular complication during the procedure and following removal of the drainage catheter. Alternatively, a transgluteal approach could have been chosen. The operator was biased toward an anterior approach due to the size of the coursing branches of the posterior left internal iliac artery and vein.