Giant cell arteritis presenting as critical lower limb ischemia.

A 62-year-old woman presented with ischemic pain of her lower limb on 2 occasions, without upper limb or cranial vessel involvement. She was treated with open bypass of her left lower limb when she presented with critical limb ischemia during her second admission. Although bilateral temporal artery biopsies were negative, superficial femoral artery biopsy at the time of surgery confirmed the diagnosis of giant cell arteritis. Corticosteroid therapy was promptly commenced.