title: Absence of the right common carotid artery: a rare case without separate origins of the internal and external carotid arteries.
abstract: Absence of the common carotid artery (CCA) is a rare anomaly. In the few cases described in the literature, it has been typically associated with separate origins of the internal carotid artery (ICA) and external carotid artery (ECA) Fife (1921), Boyd (1934), Rossiti and Raininko (2001), Cerase et al. (2009), Drazin et al. (2010), Yim et al. (2009), Monaco et al. (2009), Jerius et al. (1995), Dahn et al. (1999), Cakirer et al. (2002), Choi et al. (2015), Bryan et al. (1978), Horowitz et al. (2003), Roberts and Gerald (1978), Rajeshwari (2013), Purkayastha et al. (2006), Maybody et al. (2003), Wood et al. (2011) . To the best of our knowledge, absence of the CCA without separate origins of the ECA and ICA has only been described five times before, one of them in conjunction with a persistent proatlantal intersegmental artery (PIA) Cao et al. (2011) and four with agenesis of the ICA Kobayashi et al. (2013), Kunishio et al. (1987), Chen et al. (2008), Xie et al. (2010) . We present a case of a previously undescribed variation of this rare vascular anomaly.
authors.affiliation: Department of Neuroradiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5030, United States. Electronic address: gretchenquinones@yahoo.com.
authors.forename: Gretchen
authors.initials: G
authors.lastname: Quinones
authors.affiliation: Department of Neuroradiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5030, United States. Electronic address: ashoks@med.umich.edu.
authors.forename: Ashok
authors.initials: A
authors.lastname: Srinivasan
mesh_terms: D000328:Adult; D017536:Carotid Artery, Common; D002342:Carotid Artery, External / Q000002:abnormalities*; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D006801:Humans; D008297:Male; D054079:Vascular Malformations
keywords: Absence of common carotid artery; Asymmetric carotid artery; Occipital vertebral anastomosis; Persistent trigeminal artery; Separate origins of ICA and ECA; Vascular anomaly