PVR and melanoma: In particular, 81.2% (26 of 32) thick melanoma displayed 4 + of staining, 9.4% (3 of 32) had 3+ and 9.4% (3 of 32) showed 2+, while, 28.2% (11 of 39) thin melanoma had 4+, 25.6% (10 of 39) had 3+ and 46.1% (18 of 39) showed 2+ of NECL-5 staining.