Pathologic correlates of prognosis in lymph node-positive breast carcinomas

Area of Science:

• Oncology
• Pathology
• Surgical Oncology

Background:

• Prognostic factors in breast cancer are crucial for patient management.
• Understanding the interrelationships of pathologic features is key to accurate prognosis.

Purpose of the Study:

• To evaluate the prognostic value of various pathologic features in breast carcinoma.
• To determine the relative importance of these features in predicting patient survival.

Main Methods:

• Histological analysis of 399 infiltrating ductal breast carcinomas with axillary lymph node positivity.
• Comparison of pathologic findings with patient prognosis.

Main Results:

• Pathologic findings clustered into local spread and histologic anaplasia/mitotic count groups, both correlating with primary tumor size.
• Extent of axillary metastasis (number, size, capsular invasion) was the strongest predictor of long-term survival.
• Mitotic count and Bloom-Richardson grade strongly predicted survival time for patients who died, differentiating early vs. late mortality.

Conclusions:

• Extent of axillary metastasis is the primary determinant of long-term prognosis in node-positive infiltrating ductal carcinoma.
• Mitotic count and tumor grade are critical for predicting survival time in patients succumbing to the disease.