Table 2.

Anatomical and Histological Melanoma Categorization

	Cutaneous			Mucosal	Uveal
	Nodular/Superficial Spreading	Lentigo Maligna	Acral Lentiginous
Anatomic Location	any skin site	head/neck	palms soles subungual	sinus, nasal, oral, anal, vulvar, vaginal, urethral mucosa	iris ciliary body choroid
Incidence	increasing	increasing	stable	stable	stable
Ethnic Frequency	W > AA = As	W > AAA = As	W = AAA = As	W = AAA = As	W > As > AAA
Clinical Features	typically diagnosed at earlier stage (superficial spreading) or later stage (nodular)	typically diagnosed at early stage low metastatic potential	typically diagnosed at later stage	typically diagnosed at later stage	typically diagnosed in the intraocular only stage preferentially metastasize to liver

AA = African-American, As = Asian, W = White