title: Radiological case of the month. Posterior urethral valves.
mesh_terms: D001806:Blood Urea Nitrogen; D003085:Colic / Q000209:etiology; D000013:Congenital Abnormalities / Q000000981:diagnostic imaging; D003404:Creatinine / Q000097:blood; D006801:Humans; D006869:Hydronephrosis; D007223:Infant; D008297:Male; D014521:Urethra / Q000002:abnormalities* / Q000000981:diagnostic imaging* / Q000601:surgery; D014567:Urography
chemical_list: D003404:Creatinine