Managing non melanoma skin cancer in primary care: A focus on topical treatments BPJ 57 December 2013 Brown spots, especially on the lips, can be alarming to some. In some instances it can indicate rare oral mucosal melanoma, however in this case it was a non cancerous labial melanotic macule. Non melanocytic lesionspreventing pitfalls in diagnosis Lentigo maligna Wikipedia Common benign melanocytic tumours Stamford Skin Centre Genetics of melanocytic nevi Roh 2015 Pigment Cell & Melanoma Research Wiley Online Library