Stasis of 111In-DTPA in the posterior fossa in patients with cerebellar degeneration.

Prolonged stasis of 111In-DTPA was noted in the poterior fossa in two patients during cisternography. Both patients had clinical signs of cerebellar dysfunction and pneumoencephalographic evidence of marked cerebellar degeneration. Cisternography may be a useful adjunct in evaluation patients with suspected cerebellar atrophy.