[The neurosurgical forms of Hurst's acute hemorrhagic leukoencephalitis].

Within the group of acute encephalitis, H.A.H.L. is individualized mostly by its post mortem pathology. But several cases of recovery were recently published, the diagnostic being based on biopsy material. In 4 of our 8 cases, a comparison between the biopsy and post mortem examinations was possible : in/the diagnostic of H.A.H.L. was unequivocally confirmed, in 2 H.A.H.L. is nearly certain, in 1 it is doubtful. These considerations do not contradict the necessity of an emergency brain decompression in many instances of acute encephalitic states.