Abstract
LeserTrlat syndrome is characterized by the sudden appearance of a large amount of elements of seborrheic keratosis. The syndrome is associated with the development of malignant tumors of internal organs. The reason for the development of the syndrome is probably the production of cytokines by cells of malignant tumors of internal organs (transforming growth factor alpha (TGF-), epidermal growth factor (EGF), etc.) endogenous mediators that affect the proliferation of keratinocytes and cause rapid growth of seborrheic keratosis. Currently, the question of the paraneoplastic nature of multiple seborrheic keratosis remains open. The article presents the observation of an 82-year-old patient with lentigo-melanoma, who developed multiple elements of seborrheic keratosis within a short time, discusses the question of how in this case it is possible to consider this as a paraneoplastic process. This case is interesting for the atypical clinical picture of seborrheic keratosis and the association with lentigo-melanoma.
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