title: [Histological changes of the prostate and acute urinary retention in patients with benign prostatic hyperplasia].
abstract: OBJECTIVE
  To investigate the roles of prostatic infarction, prostatic inflammation and the type of prostatic hyperplasia in acute urinary retention (AUR) in patients with benign prostatic hyperplasia (BPH).
  
  
  METHODS
  We retrospectively analyzed 102 cases of BPH, 49 complicated by AUR and the other 53 without AUR. We compared the incidences of prostatic infarction and prostatic inflammation, the types of prostatic hyperplasia, the patients' age, the level of prostate specific antigen (PSA), the prostate volume, and international prostate symptom score (IPSS) between the AUR and non-AUR groups.
  
  
  RESULTS
  The PSA level was significantly increased in the AUR group as compared with the non-AUR group (P < 0.05). There were no statistically significant differences between the two groups in the mean age, prostate volume and IPSS (P > 0.05). The type of prostatic hyperplasia showed no correlation with AUR. The incidence rate of AUR was 5.620 and 2.326 times higher in the BPH patients with prostatic infarction and prostatic inflammation respectively than in those without (P < 0.05).
  
  
  CONCLUSIONS
  Prostatic infarction and prostatic inflammation are important risk factors of AUR in BPH patients.
authors.affiliation: Department of Urology, Taizhou Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, Jiangsu 225300, China.
authors.forename: Qing-Bing
authors.initials: QB
authors.lastname: Bao
authors.affiliation: Department of Urology, Taizhou Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, Jiangsu 225300, China.
authors.forename: Guo-Hua
authors.initials: GH
authors.lastname: He
authors.affiliation: Department of Pathology, Taizhou Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, Jiangsu 225300, China.
authors.forename: Guang-Yao
authors.initials: GY
authors.lastname: Liu
authors.affiliation: Department of Urology, Taizhou Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, Jiangsu 225300, China.
authors.forename: Chang-Geng
authors.initials: CG
authors.lastname: Zhang
authors.affiliation: Department of Urology, Taizhou Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, Jiangsu 225300, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Yang
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D006801:Humans; D007249:Inflammation; D008297:Male; D008875:Middle Aged; D011467:Prostate / Q000473:pathology*; D017430:Prostate-Specific Antigen / Q000737:chemistry; D011470:Prostatic Hyperplasia / Q000150:complications / Q000473:pathology*; D012189:Retrospective Studies; D012307:Risk Factors; D016055:Urinary Retention / Q000150:complications / Q000473:pathology*
chemical_list: D017430:Prostate-Specific Antigen