Not all melanomas are alike, and the characteristics of a fast-growing melanoma skin cancer begin in skin tumors that are thicker, symmetrical, elevated, have regular borders or have symptoms, according to the conclusions of a survey study completed by Peter MacCallum Cancer Center researchers. They also note that the faster-growing melanoma is more likely to affect men 70 years or older and individuals with fewer moles and freckles.

"In summary, this study provides descriptive data on the spectrum of melanoma rates of growth and insights into subgroups of patients with melanoma that are associated with rapid growth," stated the researchers. "We propose that this information on melanoma rate of growth be incorporated into education programs for patients and health professionals."

The advantage of identifying the more aggressive melanoma will allow for more aggressive treatment. Details of the study will be published in the December issue of Archives of Dermatology. Of the different skin cancers, melanoma is the most serious and most often appears as a change in size, shape, or color of a mole. To learn more about melanoma, visit the National Cancer Institute's melanoma section and The Cancer Blog's melanoma and skin cancer category of posts.