Glioblastoma of the brainstem associated with Hodgkin lymphoma.

This case of Hodgkin lymphoma associated with glioblastoma multiforme is, as far as we know, unique. The possible implications of this association and of HL associated in 3 known cases with meningioma are discussed.

The fine structure of subcortical neurofibrillary tangles in progressive supranuclear palsy.

The fine structure of subcortical neurofibrillary tangles was investigated in pallidum, substantia nigra, periaqueductal gray, pontine reticular gray, and dentate nucleus of 5 autopsy cases of Progressive Supranuclear Palsy. Only tangles due to straight 150 A wide filaments have been detected. These findings, obtained from a large series of cases and areas examined, confirm previous observations on the fine structure of neurofibrillary tangles in Progressive Supranuclear Palsy and suggest that the association between tangles due to straight filaments and tangles due to twisted tubules, so far described in one case, is probably exceptional.