Table of Conents

BENIGN LESIONS MASQUERADING AS MALIGNANT MELANOMA; HOW TO RECOGNIZE THE IMPOSTER


SPITZ NEVUS VS. MALIGNANT MELANOMAPCNA
Staining

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Author Features Melanoma Spitz Nevus
Niemann, Argenyl Reactivity 100% 60%
Tu, et al.   100% 100%
Penneys, et al.   100% 84%
Takahasi, et al.   63% 0%
Niemann, Argenyl Pattern Diffuse, strong Focal, weak
Tu, et al.   Diffuse Superficial
Niemann, Argenyl # Reactive cells (1-3+) 80% 3+ 100% 0-2+
Tu, et al. #/1000 cells 248.5 + 110 72.8 + 45.5