Back lesion

A 54-year-old woman consulted for this changing lesion on her back.

Dermoscopy revealed:

• multiple colours, irregular pigmentation
• a multi-component pattern
• an atypical reticular pattern
• irregular streaks (yellow arrow)
• irregular dots and globules (orange arrow)
• irregular blotches (green arrow)
• peppering, regression (white arrow)

Pathology revealed a superficial spreading melanoma (SSM) with a Breslow index at 0.33 mm

 

A 25-year-old man consulted presented a pigmented lesion on his back (lumbar area).

 

Dermoscopy revealed:

• a réticular pattern
• irregular streaks (pseudopods)

in favor of a Spitz nevus which was confirmed after excision.