When Occipital Artery Biopsy is Preferred to Temporal Biopsy for Giant Cell Arteritis: A Step-By-Step Description of the Surgical Technique.

Giant cell arteritis is an autoimmune disease that affects large and medium blood vessels of the head and neck. Its prompt treatment is mandatory to avoid severe and permanent complications, such as blindness. Temporal artery biopsy is an important part of the diagnostic work-up, especially in those patients with cranial symptoms or in the elderly with a fever of unknown origin. Most patients have signs and symptoms matching the distribution of their arterial involvement. In the case scenario of occipital headache or nuchal pain, a biopsy of the occipital artery may be preferred to a temporal artery biopsy. This article provides important anatomical details of the course of the occipital artery and explains, in a stepwise fashion, how to perform an occipital artery biopsy.