Ectopic prostatic tissue is a rare condition in which prostatic tissue develops outside its normal anatomical location while retaining the same histological and immunohistochemical characteristics as normal prostatic tissue. It has been identified in various sites, including the urinary bladder, uterine cervix, pelvic cavity, and presacral region. Within the bladder, it most commonly occurs at the trigone or bladder neck. Here, we report a case of ectopic prostatic tissue located at the dome of the bladder.

因本abstract為case report，故無Materials and Methods

Case report: A 55-year-old man presented with gross hematuria and suprapubic pain, prompting a visit to a urology clinic. He also experienced lower urinary tract symptoms, including weak stream, incomplete bladder emptying, and nocturia. Cystoscopy revealed a 1.8 cm oval-shaped protruding tumor with a smooth surface and overlying blood vessels. After six months of follow-up, the lesion appeared to have enlarged on cystoscopy (Figure 1.). Computed tomography reveal a focal lesion located at the midline anterosuperior aspect of the urinary bladder (Figure 2.). Due to concerns about potential malignancy, the patient underwent transurethral resection of the bladder tumor. The tumor was resected en bloc (Figure 3.), and histopathological analysis confirmed ectopic prostatic tissue (Figure 4.). Eight days post-operation, we checked the prostate-specific antigen level, which measured 3.281 ng/mL.

Ectopic prostatic tissue is a rare condition that can occur in various anatomical locations, including the bladder. While it is most commonly found at the bladder neck or trigone, our case highlights its occurrence at the dome of the bladder. Recognizing this condition is crucial, as the literature review indicates that ectopic prostatic tissue can occasionally harbor adenocarcinoma, highlighting the importance of differentiating it from other malignancies. Accurate diagnosis through histopathological evaluation is crucial for proper management and to prevent misdiagnosis. Regular follow-up is recommended to monitor for any potential recurrence, although such occurrences are uncommon.