Takashi Kurokawa1, Yasuhisa Baba2, Kimihiro Fujino2, Yoshiyuki Kuroiwa3, Yusuke Tomita4, Makoto Nakane4, Shoko Merrit Yamada4, Fumiaki Tanaka5. 1. Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan. Electronic address: tkurokawa2006@yahoo.co.jp. 2. Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan. 3. Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan; Medical Office, Ministry of Finance, Tokyo, Japan; Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan. 4. Department of Neurosurgery, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan. 5. Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Abstract
BACKGROUND: The subcallosal artery is a proximal branch of the anterior communicating artery and has been recognized as the vessel responsible for fornix infarction. Fornix infarction caused by vascular damage to the posterior circulation has not been reported previously. RESULTS: A 26-year-old woman suffered from fornix infarction due to artery-to-artery embolism after vertebral artery dissection. Cerebral infarctions were also found in the left thalamus, body of the left caudate nucleus, and the left occipital lobe other than the fornix. CONCLUSIONS: Occlusion of the subcallosal artery results in cerebral infarction of fornix, anterior cingulate cortex, and genu of the corpus callosum. However, in our case, lesions were restricted to the territory of posterior circulation. In addition to subcallosal artery, lateral posterior choroidal artery, a perforating branch of the posterior cerebral artery, has been described to send branches to the fornix, so we speculated that the left lateral posterior choroidal artery was actually responsible for fornix infarction.
BACKGROUND: The subcallosal artery is a proximal branch of the anterior communicating artery and has been recognized as the vessel responsible for fornix infarction. Fornix infarction caused by vascular damage to the posterior circulation has not been reported previously. RESULTS: A 26-year-old woman suffered from fornix infarction due to artery-to-artery embolism after vertebral artery dissection. Cerebral infarctions were also found in the left thalamus, body of the left caudate nucleus, and the left occipital lobe other than the fornix. CONCLUSIONS: Occlusion of the subcallosal artery results in cerebral infarction of fornix, anterior cingulate cortex, and genu of the corpus callosum. However, in our case, lesions were restricted to the territory of posterior circulation. In addition to subcallosal artery, lateral posterior choroidal artery, a perforating branch of the posterior cerebral artery, has been described to send branches to the fornix, so we speculated that the left lateral posterior choroidal artery was actually responsible for fornix infarction.
Authors: Lara Pardina-Vilella; Ana Pinedo-Brochado; Iñigo Vicente; Jone Bocos-Portillo; Amaia Martínez-Arroyo; Jose Maria Ontañon; Marian Gómez-Beldarrain; Juan Carlos García-Moncó Journal: Neurol Sci Date: 2018-05-01 Impact factor: 3.307