Persistent sciatic artery originating from left common iliac artery

Persistent sciatic artery is a very rare seen variation of the lower limb vessels. anatomically the persistent sciatic artery is the continuation of internal iliac arteries and usually leads to several symptoms such as intermittent claudication, pulsatile mass in the buttocks, and pain radiating to the lower limb. however, in untreated patients with serious complications, amputation can occur. in this case report, we describe persistent sciatic artery originating from left common iliac artery in a 72-year-old male patient who complained pain in the left leg, because of the importance of clinical and diagnostic challenges.