2026 CS Plenary Sessions
Tough Decisions for Longitudinal Melanonychia: Approach to Evaluation, Sampling, and Laboratory Processing
Dr. Adam Rubin presented information about the clinical presentation and biopsy collection of longitudinal melanonychia. Most cases of nail unit melanoma (NUM) present as longitudinal melanonychia. NUM has a higher mortality rate compared with other cutaneous melanomas due to delayed diagnosis and more advanced disease on presentation. First, Rubin described the clinical presentation of longitudinal…
Nailing the Red Streak: Evaluation of Erythronychia and Novel Insights
Dr. Adam Rubin presented information about the clinical presentation, histopathology, and differential diagnosis of longitudinal erythronychia. The differential diagnosis of longitudinal erythronychia includes onychopapilloma, nail unit acantholytic dyskeratotic acanthoma, glomus tumor, symplastic glomus tumor, arteriovenous malformation, subungual leiomyoma, amelanotic melanoma, and nail unit squamous cell carcinoma. Polydactylous erythronychia may indicate systemic disease. First, Rubin discussed…
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