Breast lesions with myoepithelial phenotype

Area of Science:

• Oncology
• Cell Biology
• Pathology

Background:

• Myoepithelial cells (MECs) form a protective layer in breast glands, crucial for secretion and preventing invasion.
• MECs exhibit diverse changes during neoplastic transformation, complicating diagnoses.

Purpose of the Study:

• To review the morphological spectrum of myoepithelial cell lesions in the breast.
• To correlate these morphological findings with prognosis in benign and malignant breast tumors.

Main Methods:

• Review of literature on myoepithelial cell lesions.
• Analysis of morphological features of MEC differentiation in breast tumors.

Main Results:

• MECs display a wide range of changes, from hyperplastic to metaplastic and neoplastic.
• Benign and malignant breast tumors can show MEC differentiation, often infrequently.

Conclusions:

• Understanding the morphological spectrum of MEC lesions is vital for accurate breast tumor diagnosis.
• Correlating morphology with prognosis aids in managing these rare breast tumors.