Asymmetry
Borders (irregular)
Color (variegated)
Diameter (greater than 6 mm (0.24 in), about the size of a pencil eraser)
Evolving over time or Elevated above the skin
Melanoma
Basal cell carcinoma
Kaposi's sarcoma
Squamous cell carcinoma
Seborrheic keratosis
Chondrosarcoma
Osteosarcoma
Nevus