Fig 3.
Fig 3.
Chronically enlarged ventricles in a patient developing NPH.
A, At age 67 years, this patient had clearly enlarged ventricles. CT was performed to evaluate suspected giant cell arteritis. The patient was walking 20 miles a day and underwent successful shunt placement for NPH 19 years later.
B, At age 70, the patient still had no symptoms of NPH.
C–E, At age 76, the ventricles are markedly enlarged. Proton density–weighted image (C) shows a prominent CSF flow void in the aqueduct. The patient will not develop symptoms of NPH for another 10 years (when a pacemaker precluded MR imaging).