title: Unusual cause of acute urinary retention in a child.
abstract: A five-year-old child presented with a history of acute urinary retention for eighteen hours. Extensive diagnostic evaluation proved the presence of a retrovesical pelvic mass, which on surgical exploration was found to be an acutely inflamed appendix.
mesh_terms: D000208:Acute Disease; D001064:Appendicitis / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D007223:Infant; D008297:Male; D014555:Urination Disorders / Q000209:etiology*