Pseudo-subarachnoid hemorrhage: a CT-finding in spontaneous intracranial hypotension.
Increased attenuation in the basilar cisterns or along the tentorium cerebelli resembling subarachnoid hemorrhage (SAH) may be found on CT in the absence of blood (pseudo-SAH). The authors found pseudo-SAH on CT in four of 40 patients with spontaneous intracranial hypotension. All four patients had brain sagging with obliteration of the cisterns and pachymeningeal enhancement along the tentorium cerebelli. Spontaneous intracranial hypotension should be included in the differential diagnosis of pseudo-SAH.
Schievink
Wouter I
WI
Maxine Dunitz Neurosurgical Institute, Cedars-Sinai Medical Center, 8631 West Third Street, Suite 800E, Los Angeles, CA 90048, USA. schievinkw@cshs.org
Maya
M Marcel
MM
Tourje
James
J
Moser
Franklin G
FG
D000328:Adult; D001921:Brain / Q000473:pathology / Q000503:physiopathology; D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control*; D004388:Dura Mater / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology; D005260:Female; D006801:Humans; D019585:Intracranial Hypotension / Q000175:diagnosis* / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis* / Q000000981:diagnostic imaging* / Q000503:physiopathology; D013346:Subarachnoid Space / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology; D013353:Subdural Effusion / Q000175:diagnosis / Q000503:physiopathology; D014057:Tomography, X-Ray Computed / Q000592:standards