Related Experiment Video
Updated: Jul 8, 2026
Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
Published on: May 16, 2025
Dermoscopy of dermatofibromas: a prospective morphological study of 412 cases
Pedro Zaballos1, Susana Puig, Alex Llambrich
1Department of Dermatology, Hospital Sant Pau i Santa Tecla, Rambla Vella, 14, 43003, Tarragona, Spain. pzaballos@aedv.es
Objective:
To describe the dermoscopic features, including vascular structures and patterns associated with dermatofibromas in a large series of cases.
Design:
Digital dermoscopic images of the prospectively collected dermatofibromas were evaluated for the presence of multiple structures and patterns.
Settings:
Dermatofibromas were collected in the Departments of Dermatology of the Hospital de Sant Pau i Santa Tecla, Tarragona, Spain, and Hospital de Sant Llatzer, Palma de Mallorca, Spain.
Patients:
A total of 412 dermatofibromas (from 292 patients) with complete documentation were collected.
Main Outcome Measures:
Frequency and intraobserver and interobserver agreement of the dermoscopic structures and patterns in dermatofibromas.
Results:
A total of 19 morphological dermoscopic structures were evaluated. Pigment network was observed in 71.8% (3% atypical pigment network), white scarlike patch in 57.0%, and a white network in 17.7%. Different vascular structures were observed in 49.5% (dotted vessels in 30.6%). Ten dermoscopic patterns were observed. The most common pattern seen in our series (34.7% of cases) was central white patch and peripheral pigment network, but in 65.3% of the cases, dermatofibromas presented different patterns including simulators of melanoma.
Conclusion:
The most common pattern associated with dermatofibroma is the classic dermoscopic pattern (pigment network and central white patch), but this tumor has a wide range of presentations.
