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

Jane Messina

Dept of Pathology, Moffitt Cancer Center and University of South Florida, 12902 Magnolia Drive, Tampa, FL 33612

ABSTRACT

Many lesions, morphologically mimic the pathological profile of malignant melanoma. In this conference, the features that help the observer to distinguish these lesions from malignant melanoma are reviewed.

SLIDE SERIES

Slide 1 THE MELANOMA EPIDEMIC

Slide 2 INTEROBSERVER AGREEMENT

Slide 3 MALIGNANT MELANOMA, INTRODUCTION

Slide 4 MALIGNANT MELANOMA, MAL-PRACTICE POTENTIAL

Slide 5 HISTOLOGIC FEEATURES OF MALIGNANT MELANOMA

Slide 6 ASYMETRY

Slide 7 JUVENILE MELANOMA

Slide 8 SPITZ NEVUS

Slide 9 EPIDERMAL UPWARD MIGRATION

Slide 10 SPTIZ NEVUS

Slide 11 DISTRIBUTION OF HISTOLOGIC FEATURES IN 10 SPITZ NEVI

Slide 12 MALIGNANT SPITZ NEVUS

Slide 13 SPITZ NEVUS VERSUS MALIGNANT MELANOMA

Slide 14 DESMOPLASTIC SPITZ NEVUS

Slide 15 MALIGNANT SPITZ NEVUS?

Slide 16 DESMOPLASTIC SPITZ NEVUS

Slide 17 PIGMENTED SPINDLE CELL NEVUS OF REED

Slide 18 PIGMENTED SPINDLE CELL NEVUS. HISTOLOGIC FEATURES

Slide 19 CONGENITAL MELANOCYTIC NEVUS. FEATURES

Slide 20 CONGENITAL MELANOCYTIC NEVUS. HISTOLOGIC FEATURES

Slide 21 CONGENITAL MELANOCYTIC NEVUS. DEVELOPMENT OF MALIGNANT MELANOMA

Slide 22 CONGENITAL MELANOCYTIC NEVUS; ATYPIAL PATTERNS OF MELANOCYTIC PROLIFERATION

Slide 23 CONGENTIAL MELANOCYTIC NEVUS; ATYPICAL PATTERNS OF MELANOCYTIC PROLIFERATION

Slide 24 CONGENITAL MELANOCYTIC NEVI

Slide 25 VULVAR MELANOCYTIC PROLIFERATIONS

Slide 26 UNUSUAL VULVAR MELANOCYTIC NEVUS

Slide 27 PAGETOID SPREAD IN ACRAL MELANOCYTIC LESIONS

Slide 28 RECURRENT MELANOCYTIC NEVUS (PSEUDOMELANOMA)

Slide 29 CELLULAR BLUE NEVUS

Slide 30 SCLEROSING BLUE NEVUS

Slide 31 COMBINED NEVUS

Slide 32 HALO NEVUS

Slide 33 HALO NEVUS VS. HALO PHENOMENON

Slide 34 PIGMENTED BASAL CELL CARCINOMA