The historical dogma that bladder calculi comprise the main indication for prostatic surgery has recently been questioned. In this study, we aimed to predict which patients should undergo simultaneous prostate and bladder calculi surgery or only bladder calculi removal by evaluating preoperative risk factors. One hundred and seventeen men with bladder stones and concomitant benign prostate enlargement (BPE) who had not received medical treatment before were included in the study. In the first step, only the bladder calculi of patients were removed and medical treatment was given for BPE. The patients who benefited from medical treatment during the follow-up were defined as Group 1 and the patients who required prostate surgery for any indication comprised Group 2. Risk factors for prostate surgery requirements were determined by comparing preoperative characteristics between the two groups with a cox regression model. In the follow-up of 117 patients with bladder stones removed and medical treatment initiated, 49 (41.9%) patients had prostate surgery indications. The indication for 33 (67.3%) of 49 patients was medical treatment failure. The presence of intravesical prostatic protrusion (IPP; hazard ratio: 2.071, 95% confidence interval [CI]: 1.05–4.05, P = 0.034), and high postvoiding residual urine volume (hazard ratio: 1.013, 95% CI: 1.007–1.019, P < 0.001) were found to be preoperative risk factors for needing future prostate surgery. In patients who have not received medical treatment for BPE before, bladder calculi developing secondary to BPE do not always constitute an indication for prostate surgery.

Keywords: benign prostate hyperplasia; bladder calculi; intravesical prostatic protrusion; medical therapy; prostate surgery

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