Incidence of skin cancer has been
increasing over the decades and early treatment is becoming more and more important.
The five year survival rate of melanoma, the most fatal skin cancer is only
9–15% at stage IV, while this rate increases to 85–99% if detected early at
stage II. Basal cell carcinoma (BCC), the most common skin cancer is rarely
fatal, but it destroys surrounding tissue if left untreated.
Fig: Four regions in the skin lesion image.
In this paper, we focus on the first
issue, i.e., the limitation of applicable skin lesion types. That is, most of
the conventional works handled only melanocytic skin lesions (MSLs) such as
melanomas and nevi, which originate from melanocytes, whereas nonmelanocytic
skin lesions, (NoMSLs) indicating all the other pigmented skin lesions except
MSLs such as BCCs and seborrheic keratoses (SKs) have been relatively neglected.
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