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Related Experiment Videos

Myeloid sarcoma involving the breast.

Jose R Valbuena1, Joan H Admirand, Gabriela Gualco

  • 1Department of Hematopathology, The University of Texas M. D. Anderson Cancer Center, Houston 77030, USA.

Archives of Pathology & Laboratory Medicine
|January 5, 2005
PubMed
Summary

Myeloid sarcoma of the breast is rare, often linked to acute myeloid leukemia (AML). Immunohistochemistry aids in diagnosing isolated breast myeloid sarcoma, even without AML history.

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Area of Science:

  • Oncology
  • Hematology
  • Pathology

Background:

  • Myeloid sarcoma (MS) is a myeloid cell neoplasm that can precede, coincide with, or follow acute myeloid leukemia (AML).
  • MS can rarely manifest as an isolated tumor mass.
  • Breast involvement by MS is an uncommon presentation.

Purpose of the Study:

  • To elucidate the clinicopathologic characteristics of six patients diagnosed with myeloid sarcoma involving the breast.
  • To highlight the diagnostic utility of immunohistochemistry in identifying isolated myeloid sarcoma of the breast.

Main Methods:

  • Retrospective analysis of clinical data from six patients with breast myeloid sarcoma.
  • Histopathological examination using routine hematoxylin-eosin staining.
  • Ancillary studies included naphthol AS-D chloroacetate esterase and immunohistochemical stains for myeloid, B-cell, and T-cell antigens.

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Main Results:

  • Six female patients with a median age of 52 years were identified.
  • Two patients presented with isolated breast masses, without concurrent or subsequent AML.
  • Immunohistochemistry demonstrated myeloid markers (myeloperoxidase, CD43) and negativity for lymphoid markers (CD3, CD20), aiding in diagnosis.

Conclusions:

  • Myeloid sarcoma of the breast is a rare entity, frequently associated with AML relapse or initial presentation.
  • The study identified cases of isolated breast MS, emphasizing the importance of immunohistochemistry for diagnosis.
  • Immunohistochemical analysis is crucial for differentiating MS from other breast malignancies, especially in the absence of systemic AML.