title: [Middle-aged and elderly patients with hydronephrosis induced by ureteric obstruction: etiology and diagnosis].
abstract: OBJECTIVE
  To improve the etiologic diagnosis of middle-aged and elderly patients with ureteric obstruction.
  
  
  METHODS
  The etiology and diagnosis were retrospectively studied in 141 middle-aged and elderly patients with hydronephrosis in recent 10 years.
  
  
  RESULTS
  59 patients had ureterolithiasis, 51 ureteric cancer, 11 ureteric tuberculosis, 9 UPJ stricture, 6 uretero-cyst and 5 ureteric polyp.
  
  
  CONCLUSIONS
  Ureterolithiasis and ureteric cancer contribute greatly to ureteric obstruction in middle-aged and elderly patients. Etiologically, B ultrasonography is suggested to be used as the first choice in diagnosis and follow-up of the middle-aged and elderly patients with hydronephrosis, especially those accompanied with hematuria.
authors.affiliation: Department of Urology, People's Hospital, Beijing Medical University, Beiging 100044, China.
authors.forename: X
authors.initials: X
authors.lastname: Qu
authors.forename: S
authors.initials: S
authors.lastname: Hou
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Huang
authors.forename: K
authors.initials: K
authors.lastname: Xu
authors.forename: C
authors.initials: C
authors.lastname: Yang
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014514:Ureteral Calculi / Q000150:complications / Q000175:diagnosis*; D014516:Ureteral Neoplasms / Q000150:complications / Q000175:diagnosis*; D014517:Ureteral Obstruction / Q000150:complications* / Q000175:diagnosis*