A Retrospective histological study of 669 cases of primary cutaneous malignant melanoma in clinical stage I. 8. The Relative prognostic value of various clinical and histological features evaluated by Cox's regression model.

The series consisted of 669 cases of primary malignant melanoma in clinical stage I reported to the Cancer Registry of Norway in the period 1955-1972. The relative prognostic value of various clinical and histological features was evaluated by a regression model proposed by Cox (1972). Sex, localization, level of invasion, cross-sectional profile and ulceration were found to have marked prognostic value. Several other factors, including tumour type and mitotic count, had negligible prognostic value when considered together with the above-mentioned factors.