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Int J Clin Exp Pathol. 2012;5(9):1007-12. Epub 2012 Oct 20.

Metastatic Merkel cell carcinoma in the bone marrow of a patient with plasma cell myeloma and therapy-related myelodysplastic syndrome.

Author information

1
Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232-5310, USA.

Abstract

Merkel cell carcinoma is an aggressive neoplasm of the skin that shows frequent lymph node metastases, but has only rarely been reported in the bone marrow. Herein we report a case of a 64-year-old male with a history of plasma cell myeloma and recent skin diagnosis of Merkel cell carcinoma who presented for a routine follow-up bone marrow to assess his myeloma. The biopsy showed persistent plasma cell myeloma, trilineage dysplasia, and clusters of neuroendocrine cells consistent with metastatic Merkel cell carcinoma. Discussion of this case, a review of metastatic Merkel cell carcinoma, and identification of clinical settings in which staging bone marrow biopsy may be warranted are presented.

KEYWORDS:

Merkel cell; bone marrow metastases; plasma cell myeloma

PMID:
23119121
PMCID:
PMC3484493
[Indexed for MEDLINE]
Free PMC Article
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