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Uncommon Histopathological Variants of Malignant Melanoma

Part 1

Cota, Carlo, MD*,†; Saggini, Andrea, MD*,‡; Lora, Viviana, MD; Kutzner, Heinz, MD§; Rütten, Arno, MD§; Sangüeza, Omar, MD; Requena, Luis, MD; Cerroni, Lorenzo, MD*

The American Journal of Dermatopathology: April 2019 - Volume 41 - Issue 4 - p 243–263
doi: 10.1097/DAD.0000000000001218
CME Article
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Abstract: Despite new horizons opened by recent advances in molecular pathology, histological evaluation still remains the diagnostic gold standard regarding cutaneous melanocytic neoplasms. Several histological variants of melanoma have been described, and their knowledge is crucial for accurate diagnosis and classification of cases with unusual clinicopathological features. Uncommon histological variants of melanoma have been described based on a broad constellation of features, including architectural pattern, stromal alterations, cytological attributes, and other morphological properties. This review is aimed at providing an extensive discussion of unusual but distinctive histopathological variants of melanoma.

*Research Unit Dermatopathology, Department of Dermatology, Medical University of Graz, Graz, Austria;

San Gallicano Dermatological Institute, Rome, Italy;

Anatomic Pathology, Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy;

§Dermatopathology Friedrichshafen, Friedrichshafen, Germany;

Department of Pathology, Wake Forest School of Medicine, Winston Salem, NC; and

Department of Dermatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain.

Correspondence: Lorenzo Cerroni, MD, Department of Dermatology, Medical University of Graz, Auenbruggerplatz 8, A-8036 Graz, Austria (e-mail: lorenzo.cerroni@medunigraz.at).

All authors and staff in a position to control the content of this CME activity and their spouses/life partners (if any) have disclosed that they have no financial relationships with, or financial interests in, any commercial organizations relevant to this educational activity.

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