Overview: Desmoplastic melanoma is a rare type of melanoma. It occurs in sun-damaged parts of the skin, usually in older people. It appears like a slow-growing irregular or round lump. It is often scar-like and rigid with uneven colouration.
Appearance: These lesions can vary in size from medium to large, and appear as a raised indurated papule, nodule or plaque. The border is large and poorly demarcated, and lesions are skin coloured to pink. Symptoms can include ulceration, bleeding, itching, or stinging.
Dermoscopy Features: Structureless area (scar like) with grey dots. Appears brown, tan, white, and milky red. Some dermoscopy clues to this type of lesion include regression structures, with scar-like appearance. Polarized dermoscopy reveals white lines. Vascular structures, including serpentine vessels, dotted vessels and or milky red areas.