Late presentation of incomplete bladder duplication: an unexpected misdiagnosed rare case report

Incomplete bladder duplication (BD) is a rare congenital anomaly in which two bladder halves remain partially connected and share a single urethra; only 12 cases have been recorded. A 60-year-old female with severe lower urinary tract symptoms (LUTS) following hysterectomy and sacrocolpopexy. Initially suspected to be mesh-related, cystourethroscopy and MRI revealed an incomplete sagittal bladder septum. Laser excision resolved her symptoms. While surgery is rarely needed for BD, this case underscores its necessity in symptomatic patients. This case of incomplete BD without associated multiple congenital malformations emphasizes the need to consider rare congenital anomalies even in atypical presentation.