[Prognostic factors in medullary breast cancer]

Area of Science:

• Oncology
• Pathology

Context:

• Medullary carcinoma of the breast (MC) is a rare subtype of breast cancer.
• Accurate prognostic indicators are crucial for effective patient management and treatment strategies.

Purpose:

• To retrospectively analyze prognostic parameters in 55 patients with medullary carcinoma of the breast.
• To determine the significance of various clinicopathological factors for disease-free and overall survival in MC.

Summary:

• Follow-up data from 55 MC patients over an average of 68.1 months were analyzed.
• Parameters included tumor size, grading, receptor status, necrosis, cellularity, nodal status, and lymphatic invasion.
• Statistical analysis using the log-rank test revealed that only axillary nodal status was prognostically significant.
• Metastases to axillary nodes were found in 31% of MC cases, a lower incidence than in non-medullary breast cancers.
• While 27.3% of patients experienced tumor progression and 21.8% died from distant metastases, 72.7% showed relapse-free survival.
• Receptor status and histological grading, important in other breast cancers, were not relevant for MC survival.

Impact:

• Axillary nodal status is the primary prognostic determinant for medullary breast cancer.
• This finding emphasizes the importance of accurate tumor classification for predicting MC outcomes.
• Further research may refine prognostic models for this specific breast cancer subtype.