FIGURE 3
From: Grading of Atypia in Nevi: Correlation with Melanoma Risk

A, nevus, compound type, with architectural disorder and severe cytologic atypia of melanocytes. Rete ridge fusion is extensive with papillary dermal fibrosis and lymphocytic and melanophage infiltration. Many of the nuclei in the nevus cells are enlarged (H&E, 10 ×). B, the nuclei are more expanded, and nucleoli are more prominent than those in the moderate degree of atypia. The cytoplasm also is more abundant (H&E, 40 ×).