The authors report a case of intraspinal lymphosarcoma spread from dorsal paravertebral muscles and bringing as first clinical manifestation a compressive radicular syndrome. It was a 16 years old girl who had crural flaccid paraplegia which appeared after a two months period of radicular pain between T1 - T6 and cordonal sensitive syndrome below T6. Poppy-seed oil perimielography was confirmative with the clinical localisation. The patient was operated upon (laminectomy) and a soft tumour around several nerve roots was withdrawn. The nerve roots were not involved by the tumour, the histopathological examination of which showed it to be a lymphosarcoma. There was an almost complete recovery of the clinical symptomatology, a few weeks after the surgical procedure. Among the facts of most practical interest, the authors emphasize: 1. the compressive myelo-radicular symptoms can be the first sign of lymphosarcomata; 2. the rare occurrence om the primitive localisation of this tumour in the subarachnoidal space; 3. the success of neurosurgery, with relief of the clinical symptoms and a relatively long survival, when the tumour is early removed.
