Changes in breast cancer reports after pathology second opinion

Area of Science:

• Oncology
• Pathology
• Medical Diagnostics

Background:

• Breast cancer pathology reports are crucial for diagnosis, prognosis, and treatment response prediction.
• Second opinions are often sought for referred patients to confirm initial findings.

Purpose of the Study:

• To evaluate the impact and frequency of pathology second opinions in breast cancer cases.
• To identify types of discrepancies and their clinical significance.

Main Methods:

• Review of 205 breast cancer cases referred for a second opinion between 2002 and 2012.
• Analysis of hematoxylin-eosin preparations, paraffin blocks, and external reports.
• Performance of immunohistochemical studies for hormone receptors, HER2, and other markers.

Main Results:

• 25.4% of cases (52/205) showed changes upon second review.
• 16% (33/205) had major changes impacting prognosis or treatment.
• Key discrepancies involved histologic classification, invasion assessment, hormone receptor status, and HER2 results.

Conclusions:

• Pathology second opinions can uncover significant discrepancies in breast cancer diagnosis.
• Discrepancies frequently relate to invasion assessment, predictive markers, and differentiating breast cancer from other tumors.
• Accurate pathology review is vital for optimal patient management and prognosis.