Thank you for your comment. I reached out to Dr. Dao, and her reply is below. Please note space prevents me from pasting in the abstracts for these citations, but if you email us at info at rheumnow.com I can reply with them: Dr. Dao: The speaker mentioned extracranial GCA as being a distinct entity. There were no abstracts that were presented but the published data to support the speaker's claim is below. -- Medicine (Baltimore). 2016 Jun;95(26):e3818. doi: 10.1097/MD.0000000000003818. Giant-cell arteritis without cranial manifestations: Working diagnosis of a distinct disease pattern. de Boysson H1, Lambert M, Liozon E, Boutemy J, Maigné G, Ollivier Y, Ly K, Manrique A, Bienvenu B, Aouba A. -- Neth J Med. 2016 Jun;74(5):182-92. Extracranial giant cell arteritis: A narrative review. Lensen KD1, Voskuyl AE, Comans EF, van der Laken CJ, Smulders YM. -- Scand J Rheumatol. 2012 May;41(3):231-6. doi: 10.3109/03009742.2011.641581. Epub 2012 Mar 9. Sonographic and clinical pattern of extracranial and cranial giant cell arteritis. Czihal M1, Zanker S, Rademacher A, Tatò F, Kuhlencordt PJ, Schulze-Koops H, Hoffmann U.