A 25 year old male presents with a smooth, symmetrical lesion on his back. He denies any itching, crusting or bleeding. It is 4mm in size with uniform colour and does not disturb the surrounding skin.

What is the most likely diagnosis?

Psoriatic plaque    
Melanoma    
Basal cell carcinoma    
Intradermal papilloma    
Benign naevus     green tick

Well done, correct.