Long-term chronological changes in urination status of patients who underwent ileal neobladder reconstruction at a single institution

Purpose This study aimed to investigate the long-term chronological changes in urination status of patients who underwent radical cystectomy (RC) followed by orthotopic ileal neobladder (ONB) reconstruction using the International Prostatic Symptoms Score (IPSS) and the Overactive Bladder Symptoms Score (OABSS). Methods This retrospective study focused on patients who underwent RC followed by ONB reconstruction and those who consented for IPSS, quality of life (QOL) based on urinary symptoms (IPSS-QOL), and OABSS assessments in the follow-up period. The patients were divided according to gender into the male group (M-group) and female group (F-group). All patients were evaluated using IPSS, IPSS-QOL, and OABSS every 3 months. The primary endpoint was to assess chronological changes in the urination status of patients who underwent ONB reconstruction after RC. Results The median age of the enrolled patients (n = 122) was 65 years and the median follow-up period was 92.0 months. The median voiding symptom score in IPSS after 10 years of surgery was significantly higher in the M-group than in the F-group. Contrarily, the F-group demonstrated a significantly higher median storage symptom score at 60-66 and 102-114 months than the M-group. The median OABSS scores were relatively higher in the F-group than in the M-group. Conclusions Although long-term urinary function with ONB demonstrated acceptable results, dysfunctional voiding was observed > 10 years after surgery. Thus, the changes in long-term urinary function should be considered when deciding ONB.