Association of midline prostatic cysts and lower urinary tract symptoms: A case-control analysis of 606 transrectal ultrasound findings.

Objective: To evaluate the association between midline prostatic cysts (MPCs) and lower urinary tract symptoms (LUTS).

Methods: A total of 606 patients who underwent transrectal ultrasound of the prostate (TRUS) were retrospectively reviewed. Patients were divided into two groups based on the presence of MPCs for comparison. We used the International Prostate Symptom Score (IPSS) as a LUTS parameter. Multivariate analysis was performed to find out independent predictors for moderate to severe LUTS. An MPC subgroup analysis was done to look for linear correlation between the size of MPCs and LUTS.

Results: Patients with no MPCs were of higher age, had more history of diabetes, were taking more urological medications, and had more IPSS storage symptoms. No significant differences were found in body mass index, total IPSS, voiding IPSS, bother score, total prostate-specific antigen level, and the prostate size. Multivariate analysis revealed age, history of diabetes, taking urological medications, and the prostate size as independent predictors of moderate to severe LUTS. The presence of MPCs was not an independent factor. Subgroup analysis failed to show significant correlation between the size of MPCs and the LUTS scores.

Conclusions: The presence of MPCs is not an independent factor for moderate to severe LUTS, and the size of the MPCs does not have any correlation to LUTS scores either.