ArticleDermatology practical & conceptual2025
Erosive Pustular Dermatosis of the Scalp Mimicking Squamous Cell Carcinoma: Can Dermoscopy Be Helpful?
Article in Dermatology practical & conceptual, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionErosive pustular dermatosis of the scalp (EPDS) presents as a rare and challenging skin disorder marked by erosions, pustules, and crusted lesions on the scalp. Diagnosing EPDS is complex, often mimicking other dermatological conditions like actinic keratosis (AK), basal cell carcinoma (BCC), or squamous cell carcinoma (SCC). Therapeutic challenges arise from EPDS's chronic, relapsing nature, which requires long-term management.
objectiveThis study aimed to identify and compare dermoscopic features of EPDS mimicking SCC of the scalp to improve diagnostic accuracy and support non-invasive differentiation.
methodsA retrospective descriptive study, conducted in two Italian dermatological centers from 2017 to 2023, included 43 patients initially diagnosed with SCC of the scalp that was afterwards confirmed as EPDS through either histology or clinical evaluation and follow-up. Clinical and dermoscopic criteria were evaluated. A comparison of dermoscopical criteria with the same number of confirmed SCC of the scalp was performed.
resultsA total of 43 patients were included, predominantly male (42:1). Androgenetic alopecia was present in 65% of cases, predominantly in the parietal area (44%). Hairpin and dotted vessels, along with white and combined lesion colors, were strongly associated with SCC, while polymorphic and branched vessels, orange tones, and targetoid hair follicles predominated in EPDS.
conclusionsEPDS poses diagnostic and therapeutic challenges due to its unique features and elusive etiology. Distinguishing SCC from EPDS is crucial to avoid unnecessary treatments; dermoscopy can serve as an instrument in this process.
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