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Benign polyp with prostatic-type epithelium of the urinary bladder: a case report
J Ishikawa1, H Yasuno, A Higuchi
1Department of Urology, Kobe University School of Medicine.
Hinyokika Kiyo. Acta Urologica Japonica
|December 1, 1990
Summary
A rare benign bladder polyp with prostate-like tissue was found in a man with hematuria. This prostatic-type epithelium likely arose from urothelial metaplasia, confirmed by specific markers.
Area of Science:
- Urology
- Pathology
- Cell Biology
Background:
- Benign polyps of the urinary bladder are uncommon.
- Prostatic-type epithelium in the bladder is a rare finding, often linked to metaplasia.
Observation:
- A 58-year-old male presented with gross hematuria.
- Cystoscopy identified a 2-mm polypoid lesion in the bladder's mid trigone.
Findings:
- Histopathological examination revealed a benign polyp lined by prostatic-type epithelium.
- Immunohistochemistry confirmed the presence of prostatic acid phosphatase and prostatic specific antigen in the polyp's cells.
- These markers suggest the polyp originated from metaplasia of the urothelium.
Implications:
- This case expands the understanding of bladder polyp histogenesis.
- It highlights the potential for urothelial metaplasia to mimic prostatic tissue.
- Accurate diagnosis is crucial for appropriate patient management and avoiding misclassification.