Table 1.

Histological criteria traditionally used in the differential diagnosis of naevoid melanoma and in the supervision process of the algorithm.

Architectural Criteria	Cytological Criteria
Verrucous/warty lesion Dome-shaped lesion	Small, epithelioid, monomorphous cells
Asymmetry Poor circumscription	Round/oval nuclei; small, eosinophilic nucleoli
Possible junctional component	Lack of maturation
Nested growth pattern	Mitoses (in deep)
Variation in nest sizes	Pleomorphism