title: Pyonephrosis masquerading as a colonic neoplasm.
mesh_terms: D003106:Colon / Q000000981:diagnostic imaging; D003110:Colonic Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D009401:Nephrosis / Q000175:diagnosis*; D011859:Radiography; D013492:Suppuration