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		First step: Diagnostic Algorithm for Differentiating Melanocytic from Non-Melanocytic Lesions [Modified according to Kreusch, Stolz, and Menzies]
	Criteria for melanocytic lesion	- Pigment network - pseudonetwork (See exception 1) - Aggregated globules (not multiple blue-gray globules) - Branched streaks - Homogeneus blue pigmentation (See exception 2) - Parallel pattern (on palms/soles and mucosal areas)
	Criteria for seborrheic keratosis	- Multiple milia-like cysts - Comedo-like openings (irregular crypts) - Light-brown fingerprint-like structures - Fissures/ridges (brain-like appearance)
	Criteria for basal cell carcinoma	- Absent pigment network AND one of: - Arborizing vessels - Leaf-like areas - Large blue-gray ovoid nests - Multiple blue-gray globules - Spoke wheel areas - Ulceration (See exception 3)
	Criteria for vascular lesion	- Red-blue lacunas - Red-bluish to red-black homogeneus areas
	None of the listed criteria
	Exception 1:	Pigment network or pseudo-network is also present in solar lentigo and seborrheic keratosis. A delicate, annular pigment network is commonly seen also in dermatofibroma (clue for diagnosis of dermatofibroma: central white patch).
	Exception 2:	Homogeneous blue pigmentation (dermoscopic hallmark of blue nevus) is also seen (uncommonly) in some hemangiomas and basal cell carcinomas and (commonly) in intradermal melanoma metastases.
	Exception 3:	Ulceration is also seen less commonly in invasive melanoma.
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