Echographic correlation of optic nerve sheath size and cerebrospinal fluid pressure.
A 23-year-old obese woman presented with papilledema. Computed tomography showed no intracranial mass lesions and lumbar puncture revealed an increased opening pressure, confirming the diagnosis of pseudo-tumor cerebri. Standardized echography of the optic nerves was performed immediately before and after lumbar puncture. A marked reduction of cerebrospinal fluid pressure correlated with a decrease in the subarachnoid fluid of the optic nerve sheath.
Galetta
S
S
Department of Neurology, University of Pennsylvania School of Medicine, Philadelphia 19104.
Byrne
S F
SF
Smith
J L
JL
D000328:Adult; D015170:Cerebrospinal Fluid Pressure; D005260:Female; D006801:Humans; D009900:Optic Nerve / Q000032:analysis*; D010211:Papilledema / Q000209:etiology; D011559:Pseudotumor Cerebri / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography