title: Images of the month: a large retrovesical mass in a young man: typical manifestation of a rare disease.
mesh_terms: D000328:Adult; D001706:Biopsy; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D003287:Contrast Media; D058405:Desmoplastic Small Round Cell Tumor / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media