Plexiform spitz nevus

Unusual Histopathological Patterns in Melanocytic Nevi With Some Previously Undescribed Patterns

Melanocytic nevi are one of the most common diagnoses in the daily practice of any dermatopathologist. Although in the vast majority of cases the final diagnosis is not difficult, there are certain rare and unusual morphologic variations that can elicit some diagnostic problems. Although some of these variations can be considered as mere morphologic oddities, others might lead to a differential diagnosis with melanoma, or with other tumors, including epithelial or neural tumors. In the current report, we review many of these morphologic variations and discuss the main differential diagnosis, when appropriate.

A case of Spitz nevus with multiple satellite lesions

Spitz nevus is a benign melnocytic lesion with many histologic similarities to malignant melanoma. To our knowledge, a Spitz nevus with multiple satellite lesions has not been reported. This paper reports a case of Spitz nevus with multiple satellite lesions on the abdomen of a 19-year-old Korean woman.