1. Classification of congenital melanocytic naevi and malignant transformation: a review of the literature 
L.H. Zaal, W.J. Mooi, J.H. Sillevis Smitt, C.M.A.M. van der Horst 
British Journal of Plastic Surgery 
Volume 57, Issue 8, Pages (December 2004)
DOI: /j.bjps

2. Figure 1 A new born boy with multiple congenital naevi.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )

3. Figure 2 A new born boy with multiple congenital naevi.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )

4. Figure 3
Congenital naevus. Within the dermis, a densely cellular lesion, consisting of large numbers of nonpigmented naevus cells, is present. Although such large numbers of naevus cells within the dermis suggest a congenital rather than an acquired naevus, this feature by it self provides insufficient basis to designate the naevus as a congenital one.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )

5. Figure 4
At the base of the same lesion, naevus cells are seen to extend between fat cells of the subcutis, (the fat vacuoles of the subcutaneous lipocytes appear as large rounded empty spaces). This feature of extent of a naevus of this type into the subcutis is thought to be almost pathognomonic of a congenital rather than an acquired naevus.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )