History A 36-year-old man presents to his general practitioner concerned that a mole has changed shape and increased in size over the preceding month. It is itchy but has not changed colour or bled. There is no relevant family history. He is fit and well otherwise. As part of his job he spends half the year in California. He smokes five cigarettes per day. Examination He appears well. Several moles are present over the neck and trunk.
All appear benign, except the one he points out that he is concerned about. This is located on the left-hand side of his trunk and is black, measuring 1 cm × 1.5 cm. The lesion is non-tender with a slightly irregular surface. There is a surrounding pink halo around the lesion. The local lymph nodes are not enlarged. Abdominal, chest and neurological examinations are normal. What is the most likely diagnosis? *This case is from Docplexus editorial team for…
