title: [Carotid dissecting aneurysm due to blunt (rubbing) injury of the Kendo protector].
abstract: A case of dissecting aneurysm of the cervical internal carotid artery due to rare mechanism by non-penetrating injury is described. A 45-year-old right-handed man had complaints of the right lateral neck pain during exercise of KENDO wearing a tight headneck protector. Following sudden dysarthria and left hemiplegia, he developed loss of consciousness and generalized convulsion. Five hours after admission, he became alert and had no neurological deficits. Four days after these episodes, he loss visual acuity of the right eye, and a few days later he showed left hemiplegia, hypotension, hypersomnia and right-sides Horner's syndrome. Right retrograde brachial angiography revealed so-called "string sign" in the right extracranial internal carotid artery and delayed circulation in the right cerebral hemisphere. He was diagnosed as having traumatic dissecting aneurysm due to blunt (rubbing) injury. He was treated with STA-MCA anastomosis 3 weeks after the accident. Usually, carotid dissecting aneurysm due to blunt injury is produced by hyperextension and contralateral rotation of the neck or direct blow to the neck, but our case shows a possible mechanism of rubbing injury such as simple anteroposterior flexion under tight neck fixation.
mesh_terms: D000783:Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D000784:Aortic Dissection / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D001265:Athletic Injuries / Q000209:etiology*; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D020212:Carotid Artery Injuries; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014949:Wounds, Nonpenetrating