title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 1-2000. A 27-year-old man with a painful retroperitoneal mass.
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D049673:History, 20th Century; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000556:secondary / Q000628:therapy; D018239:Seminoma / Q000150:complications / Q000175:diagnosis* / Q000556:secondary / Q000628:therapy; D013736:Testicular Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D013737:Testis / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human