KIM, S. H. Retroperitoneal neurilemoma : CT and MR findings. Am. J. Roentgenol. 1992, 159, 1023-1026
WEISS, S. W. Value of S-100 protein in the diagnosis of soft tissue tumors with particular reference to benign and malignant Schwann cell tumors. Lab. Invest. 1983, 49, 299-308