Related Experiment Video
Updated: Jul 9, 2025
Author Spotlight: Anterior HR-OCT as a Non-Invasive Tool for Characterizing Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
Atypical Presentation of Spitz Nevus: A Case Report
Isabel Araiza-Atanacio1, Andrea Venegas-Andrade1, Sonia Toussaint-Caire2
1Dermatology Department, Instituto Nacional de Pediatría, Mexico City, Mexico.
Introduction:
The Spitz nevus (SN) is an acquired melanocytic neoplasm composed of epithelioid and/or spindle cells, which tends to develop in childhood. In pediatric patients, it is usually located on the face and neck. Unusual locations have been found in the literature, such as the penis, mouth, and tongue, as well as 2 cases of ungual SN.
Case Report:
A 15-year-old male evaluated for dark brown-black longitudinal melanonychia that covered 40% of the nail, with pseudo-Hutchinson's sign, of 1 year of evolution.
Discussion:
The SN accounts for 1% of the melanocytic neoplasms. In the present paper, we show the third case of ungual SN never previously disclosed, which presents a zigzag pattern reported in the literature for its association with the pediatric population.
