title: Computed tomography in retroperitoneal neurofibrosarcoma (malignant schwannoma).
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000000981:diagnostic imaging*; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed