Pigmented basal cell carcinoma |
Maple leaf-like and spoke-wheel areas; concentric structures, blue-gray globules, in-focus dots, ulceration, arborizing vessels |
Pigmented squamous cell carcinoma/Bowen’s disease |
Linear arrangement of brown dots, glomerular/coiled vessels, structureless asymmetric brown areas |
Nail melanoma |
Gray/black pigment on brown background, pigmented granules, positive Hutchinson sign (pigmentation of periungual skin and nail fold[s]), micro-Hutchinson sign (pigmentation only seen through dermoscopy), triangular longitudinal melanonychia |