Selective sampling of yellow prostate chips: a specific method for detecting prostatic adenocarcinoma

Area of Science:

• Uropathology
• Surgical Pathology
• Oncology

Background:

• Accurate diagnosis of prostatic adenocarcinoma is crucial for patient management.
• Transurethral resection of the prostate (TURP) specimens are frequently examined for malignancy.
• Identifying reliable macroscopic markers for cancer in TURP chips can improve diagnostic efficiency.

Purpose of the Study:

• To evaluate the diagnostic utility of 'yellow chips' as a naked-eye indicator for prostatic adenocarcinoma in TURP specimens.
• To determine the sensitivity, specificity, and predictive values of yellow chips for detecting prostate cancer.
• To assess the impact of yellow chips on the necessity of complete chip sampling and pre-fixation examination.

Main Methods:

• Retrospective analysis of 206 transurethral resection specimens of the prostate.
• Identification and characterization of 'yellow chips' within the specimens.
• Correlation of the presence of yellow chips with the histopathological diagnosis of prostatic adenocarcinoma.
• Comparison of Gleason scores and tumor infiltration percentages between adenocarcinomas with and without yellow chips.

Main Results:

• Yellow chips were identified in 9% of specimens; 22% of specimens contained prostatic adenocarcinomas.
• Yellow chips demonstrated 100% specificity and 39% sensitivity for detecting prostatic adenocarcinoma.
• Positive predictive value for yellow chips was 100%. Yellow chips were more easily recognized in poorly fixed specimens.

Conclusions:

• The presence of yellow chips is a highly specific indicator of prostatic adenocarcinoma.
• Selective sampling of yellow chips may reduce the need for complete prostate chip examination.
• Pre-fixation naked-eye examination of prostate tissue could enhance the detection of adenocarcinoma.