[Remitting course of tumors of the spinal cord].

An analysis of 221 clinical observations showed that in 23.1%, spinal cord tumours were characterized by a remitting course. The pathogenesis of remissions was rather complicated and was partly determined by ischemic impairments of the spinal blood circulation and by repeated exacerbations of the spinal pathological process in the medulla. A prolonged remitting course of spinal cord tumours was to a certain degree associated with a marked protective reaction of the body when the growth of tumour cells might be inhibited due to "biological regression".