cross section of a diseased skin with melanoma that enters the bloodstream and lymphatic tract

abnormal anatomy and basal basement birthmark bloodstream cancer cancerous carcinoma caution cell cross crosssection dangerous dermatology dermis destructive diseased enters epidermis evidence growth hair hazardous health healthy human illustration lesions lymphatic macro malignant mark medical medicine melanin melanoma metastasis metastatic nevus notification oncology prevention rendering risky section skin stages sunburn symptom symptoms that tract treatment tumor warning