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Practical Considerations in Breast Papillary Lesions: A Review of the Literature
Mehdi Agoumi, Joshua Giambattista, Malcolm M Hayes1
1From the Department of Pathology, DynaLIFEDx Diagnostic Laboratory Services, Edmonton, Alberta, Canada (Dr Agoumi); the Departments of Pathology (Drs Agoumi and Hayes) and Radiation Oncology (Dr Giambattista), British Columbia Cancer Agency, Vancouver, Canada; and the Department of Pathology, University of British Columbia, Vancouver (Dr Hayes).
Context:
-Diagnosis of papillary breast lesions, especially in core biopsies, is challenging for most pathologists, and these lesions pose problems for patient management. Distinction between benign, premalignant, and malignant components of papillary lesions is challenging, and the diagnosis of invasion is problematic in lesions that have circumscribed margins. Obtaining a balance between overtreatment and undertreatment of these lesions is also challenging.
Objectives:
-To provide a classification and a description of the histologic and immunohistochemical features and the differential diagnosis of papillary breast lesions, to provide an update on the molecular pathology of papillary breast lesions, and to discuss the recommendations for further investigation and management of papillary breast lesions. This review provides a concise description of the histologic and immunohistochemical features of the different papillary lesions of the breast.
Data Sources:
-The standard pathology text books on breast pathology and literature on papillary breast lesions were reviewed with the assistance of the PubMed database ( http://www.ncbi.nlm.nih.gov/pubmed ).
Conclusions:
-Knowledge of the clinical presentation, histology, immunoprofile, and behavior of papillary breast lesions will assist pathologists with the diagnosis and optimal management of patients with papillary breast lesions.
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