N	Concordance
1	ic features shared by Spitz's nevus and nodular melanoma is prominent vascularit
2	s. Usually they are differentiated from nodular melanoma by clinical and histopa
3	noma in situ, lentigo maligna melanoma, nodular melanoma, acral lentiginous mela
4	 by surgical excision. The fourth type, nodular melanoma, does not have a recogn
5	re one of the most common simulators of nodular melanomas their bizarre histopat
6	ut whether the degree of vascularity of nodular melanomas differs significantly 
7	d (SD +/-5.97) for Spitz's nevi whereas nodular melanomas exhibited a significan
8	re determined in 23 Spitz's nevi and 16 nodular melanomas. The number of microve
9	ignificantly higher vascularity than do nodular melanomas. Our results thus indi