Malignant Melanomas are usually small brown-black or larger multicolored patches, plaques or nodules with irregular outline. They may crust on the surface or bleed. Many of them may arise in pre-existing moles.
Squamous Call Carcinoma: Many cancers of the head and neck begin as what is known as squamous cell carcinoma. In this case, the usual treatment consists of primary excision of the lesion, with reconstruction, when necessary.