Obturator venous ring encompassing the variant origin inferior vesical artery*

During routine dissection of a 25-year-old male cadaver, we observed a venous ring formed by the right obturator vein. The inferior vesical artery also originated from obturator artery bilaterally, and the right inferior vesical artery traveled through the venous ring described above. Knowledge of such variation may be important during surgery of the pelvis and interpretation of pelvic imaging.