title: The clinical characteristics of uterine tumor-related bladder outlet obstruction.
abstract: OBJECTIVE
  The aim of this study was to assess the clinical characteristics of bladder outlet obstruction caused by uterine tumors.
  
  
  METHODS
  We collected and analyzed data for eight patients who visited our urologic clinic due to voiding difficulty or acute urinary retention in the early morning and whose final, corroborated diagnoses were uterine tumors. Another eight patients with uterine tumor but without voiding symptoms were included as the controls.
  
  
  RESULTS
  In group 1, six patients experienced acute early-morning urinary retention and two patients experienced severe early-morning voiding difficulty. This voiding difficulty lessened significantly during the day. All patients in group 1 received urodynamic studies which indicated a high detrusor voiding pressure (median, 28.5 cmH(2)O). The uroflowmetry test performed during the day showed a good maximal flow rate (median, 27 ml/s). Seven patients in group 1 who underwent surgery no longer had early-morning emptying symptoms. All tumors were located in the posterior uterine wall, in contrast to the control group whose tumors were located in fundus or anterior wall.
  
  
  CONCLUSIONS
  Early-morning urinary retention or voiding difficulty can be considered as an important symptom of a uterine tumor obstructing the bladder outlet.
authors: Division of Urology, Department of Surgery, Taipei Veterans General Hospital, National Yang-Ming University, No. 201, Sec. 2, Shih-Pai Road, Taipei, Taiwan 11217, Republic of China.
authors: Yu-Wen
authors: YW
authors: Huang
authors: Yu-Hua
authors: YH
authors: Fan
authors: Alex Tong-Long
authors: AT
authors: Lin
authors: Kuang-Kuo
authors: KK
authors: Chen
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008875:Middle Aged; D013997:Time Factors; D001748:Urinary Bladder Neck Obstruction / Q000209:etiology* / Q000503:physiopathology; D016055:Urinary Retention / Q000209:etiology*; D014563:Urodynamics; D014594:Uterine Neoplasms / Q000150:complications* / Q000473:pathology* / Q000601:surgery