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  • Title: Nuclear DNA profiles in primary melanomas and their metastases.
    Author: Rode J, Williams RA, Charlton IG, Dhillon AP, Moss E.
    Journal: Cancer; 1991 May 01; 67(9):2333-6. PubMed ID: 2013040.
    Abstract:
    DNA-aneuploid primary melanomas are said to show a greater propensity to metastasize than those without an aneuploid profile. A higher aneuploid rate has also been reported in metastatic melanomas than in primary lesions. The ploidy profile was determined of 26 primary melanomas and their first subsequent secondaries on Feulgen-stained sections from routinely processed material using a computerized video image-analysis system. In 18 of 26 cases, both primary and secondary tumor showed similar corresponding DNA patterns. These were aneuploid in 13 of 18 of the cases. A hyperdiploid pattern was present in one case in both the primary and its metastasis, and a diploid pattern was seen in four cases. There were only eight cases in which a disparity between the nuclear ploidy profile in the primary and secondary tumor was evident. Although the results suggest that ploidy studies are not useful for predicting the metastatic potential of a primary melanoma, the maintenance of similar DNA profiles in the metastases in most of these cases was interesting in regard to tumor biology.
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