Histological changes of the prostate and acute urinary retention in patients with benign prostatic hyperplasia

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(P0.05).There were no statistically significant differences between the two groups in the mean age,prostate volume and IPSS(P0.05).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(P0.05).Conclusion:Prostatic infarction and prostatic inflammation are important risk factors of AUR in BPH patients.