Dermoscopic structures	Schematic illustration	Definition (morphology)	Diagnostic associations
Comma-shaped vessels		Slightly curved vessels	Dermal nevi, congenital melanocytic nevi^A11
Dotted vessels		Red dots (0.01 to 0.02 mm)	Spitz nevi, early melanoma (dotted over milky-red background)^A11
			Clark nevi (dotted over tan background)
Serpentine vessels		Irregular linear/undulating short vessels	Melanoma, congenital nevi^A11
Milky-red globules/vascular blush		Ill-defined globules of milky-red color and ill-defined areas of milky-red color	Amelanotic melanoma^A11
Polymorphous vessels		Combination of two or more vessel morphologies	Melanoma^A14
		Most common combination is dotted and serpentine vessels
Corkscrew vessels		Coiled and tortuous vessels	Cutaneous melanoma metastases, nodular melanoma, desmoplastic melanoma