title: Spontaneous production of a pyeloduodenal fistula.
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D004378:Duodenal Diseases / Q000175:diagnosis* / Q000601:surgery; D004381:Duodenal Ulcer / Q000150:complications; D006801:Humans; D007412:Intestinal Fistula / Q000175:diagnosis* / Q000601:surgery; D007674:Kidney Diseases / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D009392:Nephrectomy; D010439:Peptic Ulcer Perforation / Q000150:complications; D014548:Urinary Fistula / Q000175:diagnosis* / Q000601:surgery