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A 46-year-old woman with an unruptured aneurysm of the paraclinoid portion of the right internal carotid artery underwent coil embolization in our institute. A diagnostic angiogram was performed 2 months prior to the procedure. Several punctures of the right femoral artery were required at the time of diagnosis. The pulsation of the femoral artery was noticed to be very weak on both sides. A 6 French introducer was inserted into the right femoral artery for the embolization procedure. Coiling of the aneurysm was performed. Heparin was administered during the procedure as a prophylactic protocol. At the end of the procedure, prior to the use of hemostatic device, we did an angiogram of the right femoral artery to check the caliber and the site of entrance of the introducer into the artery. The femoral artery was found to be of small caliber. Another vessel, more prominent in its diameter, arose from the internal iliac artery and coursed lateral to the femoral artery towards the distal part of the limb, was observed (Fig. 1). The caliber of the femoral artery was considered too small to use a hemostatic device. Manual compression was done to achieve hemostasis in the groin. Further investigation of this anomalous artery was performed by contrast enhanced CT scans. The anomalic vessel was found bilaterally and the final diagnosis of this artery was the persistent sciatic artery (PSA) by its course.

A case of persistent sciatic artery encountered during cerebral aneurysm embolization