Cytogenetic analysis was performed on three specimens of clear cell sarcoma, a rare neoplasm of uncertain histogenesis. Chromosomal analysis of clear cell sarcoma has not been reported previously. Two of the specimens analyzed consisted of the primary foot lesion and subsequent lymph node metastasis in a 29-year-old male. The other specimen was a primary foot lesion in a 61-year-old male. Clonal abnormalities were detected in all three of the specimens. The significance of these results with regard to the origin of this uncommon neoplasm is discussed.

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