[Quantitative evaluation of the nucleolus organizer regions (NORs) in malignant melanoma of the skin: is it a new prognosis index?].
Nucleolar Organizer Region-associated proteins (NORs) have been evaluated on paraffin sections of a series of cutaneous malignant melanomas, stage IA at the time of the initial diagnosis. A significant difference (P less than 0.001) was found between the numbers of AgNORs in the cases which developed metastases and those without metastases: increasing values of AgNORs representing increased risk of metastases.
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