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Breast pathology practice: most common problems in a consultation service.

T C Putti1, S E Pinder, C W Elston

  • 1Department of Pathology, National University of Singapore, Singapore, and Department of Histopathology, The Breast Unit, Nottingham City Hospital NHS Trust, UK.

Histopathology
|October 26, 2005
PubMed
Summary

Diagnosing common breast lesions relies on morphology and immunohistochemistry. Key challenges include differentiating usual epithelial hyperplasia from atypical ductal hyperplasia and subtyping invasive carcinomas.

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Area of Science:

  • Pathology
  • Oncology
  • Dermatology

Background:

  • Molecular methods advance breast lesion understanding, but conventional morphology and immunohistochemistry remain crucial for diagnosis.
  • This review focuses on common breast lesions encountered in consultation, highlighting diagnostic features and potential pitfalls.

Observation:

  • Distinguishing usual epithelial hyperplasia (UEH) from atypical ductal hyperplasia (ADH) is a frequent challenge.
  • Subtyping invasive breast carcinomas and ruling out malignancy in sclerosing lesions present diagnostic difficulties.
  • Differentiating various papillary and fibroepithelial lesions also poses challenges.

Findings:

  • Atypical ductal hyperplasia (ADH) is considered a clonal process, identifiable by uniform phenotype and specific immunohistochemical markers.

Related Experiment Videos

  • Immunohistochemical stains, including cytokeratin, myoepithelial markers, E-cadherin, and hormone receptors, aid in resolving diagnostic dilemmas.
  • Accurate diagnosis of breast lesions requires careful integration of morphological and immunohistochemical data.

    • Implications:

    • Improved diagnostic accuracy for common breast lesions can lead to more appropriate patient management and treatment strategies.
    • Understanding the nuances of differentiating benign from pre-malignant or malignant lesions is critical for patient outcomes.
    • This review provides practical guidance for pathologists managing challenging breast pathology cases.