[Two neurinomas of the cauda in a patient with a suspected disk lesion (author's transl)].

Multiple neurinomas in the cauda equina were found in a 56-year-old patient, who had been suffered from left-sided sciatica for about one and half years. The origins were suspected in right L3 nerve root and left L4 nerve root. Multiple tumours in the cauda equina are not common; therefore, the authors discuss in this paper how rare the case is and about the difficulties of the differential diagnosis between herniated disk and tumour in the cauda equina.