Dermaimaging

In a 56-year-old woman, on the nose

What to see at dermoscopy:

-pseudonetwork
-irregular pigmentation around follicular opening (circle)
-erythema
-finguerprint-like structures
-moth-eaten border

Biopsy at the irregular pigmentation (circle area) was indicated to rule out a lentigo melanoma
Histology correlation: actinic keratosis

Comment: the finding of finguerprint-like structures and the moth-eaten border indicates the possibility of coexistence of a solar lentigo beside the actinic keratosis.

In a 42-year-old woman, on the lower lip

What to see at dermoscopy:

-light brown globular structures following a parallel pattern (finguerprint-like structures)
-curvilinear streaks, with color variation from light dark brown
-blue-white veil
Biopsy was suggested
Histopathological correlation: melanotic labial macule

Comments: melanotic macules (or melanoses) are nonmelanocytic entities; they are not considered preneoplastic lesions and when followed over a long period,
they remain stable and unchanged. Despite their benign behavior, the clinical appearance of melanosis can share some features with malignat melanoma.

 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 57-year-old woman, on the shoulder

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
-milia-like cysts
Dermoscopy signs in favor of solar lentigo