Related Experiment Videos
Peripherally localized benign hyperplastic nodules of the prostate
W M Van de Voorde1, R H Oyen, H P Van Poppel
1Department of Pathology I, University Hospitals of the Katholieke Universiteit Leuven, Belgium.
Summary
Benign hyperplastic nodules in the prostate peripheral zone are often mistaken for cancer on biopsies. These nodules, found in 18.5% of surgical specimens, mimic transition zone hyperplasia.
Area of Science:
- Urology
- Pathology
- Surgical Oncology
Background:
- Prostate needle-core biopsies for focal lesions frequently yield carcinoma.
- A subset of negative biopsies are attributed to benign hyperplastic nodules in the peripheral prostate zone.
- The distinct morphology of these peripheral nodules requires characterization.
Purpose of the Study:
- To investigate the morphological characteristics of peripheral prostate hyperplastic nodules.
- To differentiate these nodules from malignancy in diagnostic evaluations.
Main Methods:
- Examination of surgical specimens from cystoprostatectomy and radical prostatectomy.
- Histopathological analysis of identified peripheral hyperplastic nodules.
- Correlation of nodule location and size with surgical findings.
Main Results:
- Peripheral hyperplastic nodules identified in 18.5% of surgical specimens.
- Nodules were unifocal in 50% of cases, with a mean diameter of 4 mm.
- Histologically, they resemble transition zone benign nodular hyperplasia, sometimes with cystic changes or surrounding atrophic glands.
Conclusions:
- Peripheral hyperplastic nodules are a distinct entity within the prostate peripheral zone.
- These nodules share histological similarities with benign nodular hyperplasia of the transition zone.
- Inclusion of peripheral hyperplastic nodules in the differential diagnosis of peripheral prostate lesions is recommended.