Melanoma ?

A 52-year-old woman consulted for an atypical pigmented lesion on her right thigh.

Dermoscopy revealed:

• asymmetry
• eccentric pigmentation
• atypical reticular network
• depigmentation
• pink/red area

Clinical and dermoscopic images were in favor of a melanoma.

Lesion was excised and pathology revealed a dermatofibroma.

This case is interesting to show how a dermatofibroma may be atypical:

• clinical examination: no induration at palpation and asymmetry of colours
• dermoscopic features

Atypical nevus

A 32-year-old woman consulted for a mole check-up.
Clinical examination revealed the greatest mole localized on her left scapular area.
At dermoscopy, this lesion featured a pink veil, irregular streaks, irregular globules, an atypical reticular pattern, linear irregular vessels.

Irregular globules.

Polymorphous vessels including irregular linear vessels.

Irregular streaks.

Two diagnoses were possible: superficial spreading melanoma or atypical nevus. The patient did not mention any changing in surface or borders.
This lesion was excised and pathology revealed an atypical nevus ( compound) with a slight irritation.