Cheek lesion.

A 55-year-old man consulted for a pigmented lesion on his left cheek

Dermoscopy revealed:

• an irregular broadened network
• rhomboidal structures

Pathology was in favor of a lentigo maligna melanoma in situ.

Pigmented lesion on upper lip.

A 32 year-old woman consulted for this pigmented lesion present for 6 months.

Dermoscopy revealed:

• an atypical pseudonetwork
• rhomboidal structures
• irregular globules

A melanoma was suspected and this lesion was excised. Pathology revealed a superficial spreading melanoma in situ (Clark level I).

Lentigo maligna melanoma

A 68-year-old man consulted for an enlarging dark pigmented lesion.


Dermoscopy revealed asymmetrical pigmented follicular openings, rhomboidal structures and some homogenous areas.
A biopsy confirmed the diagnosis of lentigo maligna . The lesion was completely excised and pathology revealed a lentigo maligna melanoma in situ.

Lentigo maligna melanoma

A 69-year-old woman consulted for a macular pigmented lesion of her right cheek. This multicoloured lesion was centered by a dark brown spot.




Dermoscopy focused on the darker area showed annular granular structures, asymetric follicular openings and rhomboidal structures very suggestive of lentigo maligna melanoma.


A biopsy was performed on the dark brown spot and revealed a lentigo maligna melanoma in situ.


The lesion was entirely removed and a graft was performed.
The pathology exam of the whole lesion revealed a breslow index at 0.46mm