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PLEASE NOTE A NEW 4TH EDITION HAS BEEN PUBLISHED AND IS AVAILABLE IN THE LIBRARY AND IN PRINT
Neoplasms of the skin are the most frequently diagnosed tumours of domesticated animals. The prevalence varies depending on the study and geographical location, but in dogs and cats they represent between 25% and 58% of all neoplasms. More than 25 morphologically distinct cutaneous neoplasms have been described. Skin tumours may arise from epithelial elements (epidermis, hair follicles, sweat and sebaceous glands), mesenchymal tissue and melanin-producing cells. Skin tumours may also arise from cells of the skin immune system, including cells of macrophage/histocytic lineage, lymphoid cells, plasma cells and mast cells, In addition, neoplasms of non-cutaneous origin, especially carcinomas, may metastasize to the skin. Neoplastic lesions; Specific tumour types; and Paraneoplastic syndromes affecting the skin are all considered.
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