<% strPathPics = Session("strPathPicsL") imgBg = strPathPics + Session("strMedia") %> Subarachnoid Hemorrhage2

Subarachnoid Hemorrhage - Case 2

A 25 year-old man developed the lightening onset of an explosive headache followed by nausea and vomiting.

Show the Blood in the Interhemispheric Fissure   Show the Blood in the Basal Cisterns   Show the Blood in the Lateral Fissures   Show the Blood in the 4th Ventricle

Axial CT Scans without contrast: Note the bright areas which signify blood in the interhemispheric fissure, basal cisterns, fourth ventricle. Spontaneous subarachnoid hemorrhage is most often caused by a ruptured aneurysm.  They usually present with sudden headache, nausea, and vomiting, often associated with signs of increased intracranial pressure.  Rarely, an aneurysm may enlarge and present with focal signs from a mass effect, as is the case of a third nerve palsy and an aneurysm arising from the posterior communicating artery.

Revised 04/30/06.
The Electronic Curriculum is copyrighted 1998,  Case Western Reserve University School of Medicine.