Granulomatous inflammation can occur in the blood vessel wall leading to occlusion. Temporal artery biopsy is performed for diagnosis. A long specimen (at least 2 cm) is important due to skip lesions.
Related Tutorial: Temporal Artery Biopsy Tutorial
Related Atlas: Giant Cell Arteritis, (GCA), Temporal Arteritis
Related Atlas: Arteritic anterior ischemic optic neuropathy (AAION) secondary to giant cell arteritis (GCA)