Carotid agenesis with intercavernous anastomosis.
Agenesis of internal carotid artery (ICA) is rare. Association of agenesis with     abnormal arterial communication between the cavernous segment of the carotid     arteries is extremely rare. We present a case of a middle-aged woman who     presented with sudden onset severe holocranial headache. She was investigated     and diagnosed to have sub-arachnoid hemorrhage on CT scan. Digital Subtraction     Angiogram revealed absent right internal carotid artery. The right middle     cerebral artery received blood supply from an incidentally detected     intercavernous anastomosis from the left internal carotid artery. No aneurysm,     arteriovenous malformation or any other vascular abnormality was detected. The     patient was managed conservatively. She has been asymptomatic for five years on     follow up.
St Stephen's Hospital, Department of Neurosurgery, Delhi, India. drrohansinha@gmail.com
Rohan
R
Sinha
Raghavendra
R
Gupta
Pooja
P
Abbey
Awadhesh
A
Jaiswal
Sushil
S
Kumar
D015901:Angiography, Digital Subtraction; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D002533:Cerebral Angiography; D005260:Female; D006261:Headache / Q000000981:diagnostic imaging* / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed