Box 1: Images of melanoma

(a) View of posterior thighs of a patient at initial visit (baseline photograph).
(b) View of posterior thighs at review visit two years later, showing enlargement and darkening of a pigmented lesion on the right upper medial leg (arrow). Histopathological examination of this lesion showed level II superficial spreading melanoma, measuring 0.49mm in maximum tumour thickness and arising in a preexisting dysplastic compound naevus.
(c) Macroscopic view of the changing lesion.
(d) Skin surface microscopy (epiluminescence microscopy) of the lesion.

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