Regression.

A 21-year-man consulted for this lesion on his arm

Dermoscopy revealed:

• a whitish - pinkish structureless area
• with gray dots

in favor of a regressive lesion.

Pathology was in favor of a fully regressive melanocytic lesion. A fully regressive melanoma cannot be ruled out. 

Pigmented lesion on neck.

A 57 year-old-woman consulted for a pigmented lesion on her neck.

Dermoscopy revealed:

• no melanocytic structures
• a structureless pattern
• irregular blue gray dots/globules 

Pathology was in favor of a Bowen's disease.

Thoracic pigmented lesion

Man 52 years old; Acquired pigmented lesion on chest.

Dermoscopy revealed:

• multiple colors
• asymmetry of form and structures
• an atypical network
• a blue white veil
• irregular dots and globules

Pathology revealed a melanoma in situ.

A 32-year-old man consulted for this enlarging pigmented lesion.

Clinical presentation: multiple couleurs, asymmetry

Dermoscopy revealed:

• multiple colors
• irregular dots
• pink structureless area
• irregular blotch
• regression

This lesion was easily diagnosed superficial spreading melanoma.

Pathology revealed a superficial spreading melanoma with a Breslow index at 0.5mm

Mole with an eccentric pigmentation

A 40-year-old woman consulted for a mole with an eccentric hyper pigmentation.

Dermoscopy revealed:

• an atypical reticular network
• an eccentric dark reticular network
• irregular brown dots

Lesion was excised and pathology revealed a melanoma in situ.