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Epithelioid angiosarcoma of the kidney: A diagnostic dilemma in fine-needle aspiration cytology

Authors

  • Charanjeet Singh M.D.,

    1. Department of Laboratory Medicine & Pathology, University of Minnesota Medical School, Minneapolis, Minnesota
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  • Linjun Xie M.D.,

    1. Department of Laboratory Medicine & Pathology, University of Minnesota Medical School, Minneapolis, Minnesota
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  • Stephen C. Schmechel M.D., Ph.D.,

    1. Department of Laboratory Medicine & Pathology, University of Minnesota Medical School, Minneapolis, Minnesota
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  • J. Carlos Manivel M.D.,

    1. Department of Laboratory Medicine & Pathology, University of Minnesota Medical School, Minneapolis, Minnesota
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  • Stefan E. Pambuccian M.D.

    Corresponding author
    1. Department of Laboratory Medicine & Pathology, University of Minnesota Medical School, Minneapolis, Minnesota
    • Department of Laboratory Medicine and Pathology, Division of Surgical Pathology, University of Minnesota, 420 Delaware SE, C422 Mayo, MMC 76, Minneapolis, MN 55455
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Abstract

Epithelioid angiosarcomas (EAS) of kidney are rare and aggressive tumors with noncharacteristic imaging features that overlap with those of inflammatory conditions and renal cell carcinoma (RCC). We report the fine-needle aspiration (FNA) cytology findings of a case of EAS that involved the left kidney of an 83-year-old male. The smears and cell block sections showed pleomorphic epithelioid cells with ample cytoplasm, eccentric nuclei, occasional cytoplasmic hyaline globules, and rare intracytoplasmic lumina. Immunohistochemical stains performed on cellblock sections showed that the tumor cells were positive for vimentin, CD31, CD34, Factor VIII, and CD10, but showed no staining for cytokeratins AE1/AE3 and 8/18, HMB45, CD45, smooth muscle actin, and S100. The morphological and immunohistochemical distinction between EAS, primary tumors of the kidney, and other epithelioid and rhabdoid neoplasms is discussed. Diagn. Cytopathol. 2012. © 2010 Wiley Periodicals, Inc.

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