Black lesion.

A 25-year-old woman consulted for a dark pigmented lesion on her abdomen

Dermoscopy revealed:

• asymmetry of form
• a central blotch
• regular pseudopods

Pathology was in favor of melanocytic Spitz nevus

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.

A small pigmented lesion on a leg

A 29-year-old woman consulted for  a small pigmented lesion on her right leg.

Dermoscopy revealed

• spoke wheel areas

Pathology revealed a superficial basal cell carcinoma 

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.

Another back lesion.

A 34-year-old man consulted for a changing pigmented lesion on his back.

Dermoscopy revealed:

• asymmetry
• an atypical reticular pattern
• a regression area

Pathology revealed a melanoma in situ.

Back lesion

A 65-year-old man with many pigmented lesions on his back. One of this lesion was atypical.

Dermoscopy revealed:

• multiple colors
• an atypical reticular network
• regression
• a reticular depigmentation  (rectangle)

Pathology revealed a melanoma in situ.

Nodular lesion

A 57-year-old woman consulted for this nodular lesion on her right chest.

Dermoscopy revealed:

• a non pigmented lesion
• remnant of pigmentation (red circles)
• a pink veil
• atypical and polymorphous vessels

Pathology revealed a nodular melanoma (Breslow index 1.6mm)

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.