In a 54-year-old man, on the chest
What to see at dermoscopy:
-sharply demarcated and irregular border (moth-eaten appearance)
-within the lesion, faint and irregular network (fingerprint-like appearance)
-structureless areas
Dermoscopy signs in favor of solar lentigo
In a 56-year-old woman, on the cheek; previous personal history of melanoma excision on the trunk
What to see at dermoscopy:
-asymmetric pigmented follicular openings forming an annular-granular pattern (rhomboidal structures)
-white-blue veil
-scar-like depigmentation
-blue-gray fine dots (peppering),
Biopsy was suggested at pigmented site
Histopathological correlation: melanoma in situ
In 82-year-old woman, on the supraclavicular fossa
What to see at dermoscopy:
-sharply demarcated and irregular border (moth-eaten appearance); within the lesion, faint and irregular network
-structureless areas
-peppering at the edge of the lesion (regression areas)
-milia-like cysts and comedo-like openings
-cerebriform appearance at the upper right portion of the lesion
Dermoscopy signs in favor of lichen planus-like keratosis
Comments: lichen planus-like keratosis is believed to be either a solar lentigo or an early seborrheic keratosis undergoing regression; important to remember that it can simulate the early changes seen in lentigo maligna.
In a 45-year-old woman, on the lower back
What to see at dermoscopy:
-pseudopods
-blotches
-structureless area
Excision was indicated
Histopathological correlation: superficial spreading melanoma