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Table 1 The three point checklist [36]

From: Dermoscopy as a technique for the early identification of foot melanoma

Feature Significance
Asymmetry Examined in both axes, using the dermatoscope. Colour and structures are assessed. Significant asymmetry of colour or structures within the lesion are recorded as a score of 1.
Atypical pigment network Many naevi have a uniform reticular pattern to the pigment distribution resembling chicken wire or a honeycomb structure with regular brown or black lines. An atypical network is recorded as a score of 1 if the network is irregular in thickness, irregular holes, or irregular colours.
Blue structures or blue-white veil The presence of any blue structure observed including a blue-white veil scores 1.
  1. Any lesion scoring two or more should warrant further investigation – referral/excision