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Prostatic adenocarcinoma with glomeruloid features

A Pacelli¹, A Lopez-Beltran, A J Egan

¹Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA.

Human Pathology

|May 22, 1998

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Prostatic adenocarcinoma with glomeruloid features is a distinct growth pattern specific to malignancy. This uncommon finding can aid in diagnosing prostate cancer, especially in needle biopsies.

Area of Science:

Uropathology
Surgical Pathology
Oncology

Background:

Prostate adenocarcinoma exhibits diverse architectural patterns.
A novel pattern, prostatic adenocarcinoma with glomeruloid features, characterized by intraluminal ball-like clusters, has been identified.

Purpose of the Study:

To define the architectural features of prostatic adenocarcinoma with glomeruloid features.
To determine the frequency and distribution of this pattern in radical prostatectomy specimens and needle biopsies.
To assess its association with clinicopathological parameters.

Main Methods:

Review of 202 radical prostatectomy specimens and 100 needle biopsy specimens.
Detailed analysis of architectural patterns, including glomeruloid features.

Related Experiment Videos

Correlation with Gleason score, pathological stage, prostatic intraepithelial neoplasia, and perineural invasion.

Main Results:

Glomeruloid features were identified in 4.5% of radical prostatectomy specimens and 3% of needle biopsies.
The pattern was associated with high Gleason scores (7-8), high-grade prostatic intraepithelial neoplasia, and extensive perineural invasion.
Glomeruloid features were specific to malignancy and not observed in benign or premalignant lesions.

Conclusions:

Prostatic adenocarcinoma with glomeruloid features is an uncommon but distinctive growth pattern specific to malignancy.
This pattern can serve as a diagnostic clue for prostate cancer, particularly in challenging needle biopsy cases.
The pattern is often associated with high-grade disease and extraprostatic extension, warranting further investigation into its predictive value.