title: Ultrasound and CT demonstration of a benign cystic teratoma arising from the retroperitoneum.
mesh_terms: D003884:Dermoid Cyst / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013724:Teratoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography