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Merkel cell carcinoma and chronic lymphocytic leukemia (collision tumor) of the arm: A diagnosis by fine‐needle aspiration biopsy
Author(s) -
Barroeta Julieta E.,
Farkas Tunde
Publication year - 2007
Publication title -
diagnostic cytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.417
H-Index - 65
eISSN - 1097-0339
pISSN - 8755-1039
DOI - 10.1002/dc.20616
Subject(s) - medicine , merkel cell carcinoma , chronic lymphocytic leukemia , fine needle aspiration , biopsy , pathology , leukemia , carcinoma , radiology
Simultaneous involvement of the same anatomical site by two different primary malignant tumors is rare. Cases of hematopoietic malignancies associated with breast and skin neoplasms have been described. The association of chronic lymphocytic leukemia (CLL) and Merkel cell carcinoma (MCC) has been established, although the cause for this association is still unclear. There are reports of MCC metastatic to lymph nodes involved by CLL. We report the case of a 57‐year‐old man with history of CLL with concurrent involvement of the arm by CLL and MCC diagnosed on fine‐needle aspiration biopsy (FNA). To our knowledge, this is the first reported case of such tumors colliding in a nonlymphoid site, diagnosed by FNA in the English literature. Diagn. Cytopathol. 2007; 35:293–295. © 2007 Wiley‐Liss, Inc.