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[Salivary duct carcinoma].

D Hungermann1, K Roeser, H Buerger

  • 1Gerhard-Domagk-Institut für Pathologie, Universitätsklinikum Münster.

Der Pathologe
|July 26, 2005
PubMed
Summary

Salivary duct carcinoma (SDC) is a rare, aggressive cancer of the salivary glands. Immunohistochemistry aids in diagnosing SDC, distinguishing it from other cancers and guiding potential targeted therapies.

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Area of Science:

  • Oncology
  • Pathology

Context:

  • Salivary duct carcinoma (SDC) is a rare, high-grade malignant neoplasm primarily affecting major salivary glands.
  • SDC presents with aggressive clinical behavior, including local invasion, early metastasis, and poor patient outcomes.

Purpose:

  • This tutorial aims to clarify the diagnostic challenges and immunohistochemical features of SDC.
  • To highlight key markers for differentiating SDC from other neoplasms, particularly breast ductal carcinomas.

Summary:

  • SDC morphology can mimic breast ductal carcinoma, necessitating precise diagnostic tools.
  • Immunohistochemistry is crucial, with SDC typically showing reactivity for cytokeratins (Ck) 7, 8/18, and 19. A subgroup may express Ck 5/6.
  • Markers such as carcinoembryonic antigen, GCDFP-15, androgen receptor, and occasionally prostate-specific antigen are valuable for diagnosis. Abnormal p53 and c-erbB2 expression correlate with prognosis.

Impact:

  • Accurate diagnosis of SDC is essential for appropriate patient management and treatment planning.
  • Understanding SDC's immunohistochemical profile can inform the development of targeted therapeutic strategies, especially for cases with c-erbB2 over-expression.

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