[Radiological study of lumbosacral nerve root sheath cyst (analysis of 65 cases)].

65 cases of nerve root sheath cyst of lumbosacral region were found out of 544 cases of myelography, 43 were confirmed by operation. The main radiologic features were: round or oval in shape in 28 cases; cylindrical or fusiform in 14; and mixed form in 13. In 10 cases, the contrast medium was seen to extend in an irregular pattern along nerve root sheath.