Adequate histologic sectioning of prostate needle biopsies

Area of Science:

• Uropathology
• Histopathology
• Prostate Cancer Diagnostics

Background:

• Standardized methods for prostate needle biopsy processing are lacking.
• Current practices vary, with implications for diagnostic accuracy and laboratory efficiency.

Purpose of the Study:

• To evaluate the impact of processing one versus three prostate biopsy cores per cassette on cancer yield.
• To determine the optimal histologic sectioning strategy for prostate needle biopsies.

Main Methods:

• Prospective comparison of two processing methods: one core per cassette versus three cores per cassette.
• Analysis of 6708 sets of prostate needle biopsies from a national reference laboratory.
• Comparison of diagnostic yield for benign conditions, atypical small acinar proliferation, high-grade prostatic intraepithelial neoplasia, and cancer.

Main Results:

• No significant difference in the detection rate of cancer or precursor lesions between the one-core and three-core methods.
• Cancer detection rates were 41.1% (one core) and 42.6% (three cores) (P = .02).
• Similar yields for benign diagnoses, atypical small acinar proliferation, and high-grade prostatic intraepithelial neoplasia.

Conclusions:

• Submitting three prostate biopsy cores per cassette does not compromise diagnostic yield.
• Recommending three cores per cassette can optimize laboratory workflow by minimizing processing labor and associated costs.
• This finding supports a more efficient approach to prostate needle biopsy examination.