[Spontaneous brain stem hemorrhage: analysis of cases].

Four cases of spontaneous haemorrhages to the brain stem were described. They concerned young patients (middle age was 34 years) without previous risk factors. The diagnosis was established on the ground of clinical examination, neuroimaging methods-CT, MR, cerebral angiography. We could not indicate the cause of haemorrhage (i.e. a blood vessel pathology, nor coagulation disturbances neither other pathological coincidence were found). All patients survived, but none of them is able to continue his professional work. Two patients demonstrate slight pyramidal signs, and slight hemihypaesthesia. One patient still presents profound brain stem symptoms, and in the last case tetraparesis remains.