Case Report: PDF OnlySpontaneous Thrombosis and Complete Disappearance of Traumatic Carotid-cavernous Fistulas After AngiographyLuo, Chao-Bao*; Teng, Michael Mu-Huo; Chang, Feng-Chi; Chang, Cheng-Yen Author Information Department of Radiology, Taipei Veterans General Hospital and National Yang-Ming University School of Medicine, Taipei, Taiwan, R.O.C. *Correspondence to: Dr. Chao-Bao Luo, Department of Radiology, Taipei Veterans General Hospital, 201, Section 2, Shih-Pai Road, Taipei 112, Taiwan, R.O.C. E-mail: [email protected]; [email protected] Received: November 4, 2004 • Accepted: April 15, 2005 Journal of the Chinese Medical Association: October 2005 - Volume 68 - Issue 10 - p 487-490 doi: 10.1016/S1726-4901(09)70080-2 Metrics Abstract Traumatic carotid-cavernous fistula (TCCF) is a direct shunting fistula due to a tear in the cavernous portion of the internal carotid artery (ICA). Spontaneous thrombosis of the high-flow shunts in TCCFs is extremely rare. Most cases are treated using endovascular embolization to relieve the clinical presentations. We report 2 unusual cases of TCCF with spontaneous closure of fistulas at intervals of 2 and 10 days, respectively, after diagnostic angiograms. The possible mechanisms of spontaneous healing of the fistulas in these patients with minor head injury and small fistulas were presumed to be a transient decrease in fistula blood flow because of irritation of and/or subtle injury to the ICA by contrast media and/or catheter during diagnostic angiogram, with thrombosis formation at the fistula. © 2005 by Lippincott Williams & Wilkins, Inc.