Objective: Clinical characteristics of the peculiarities of non-specific skin lesions with patients having malignant lymphomas (ML).Methods: 130 patients having malignant lymphomas were observed, 50 patients – having Hodgkin’s lymphomas, 38 patients - B-cell lymphomas and 42 patients – T-cell lymphomas.Results: Six main types of nonspecific lesions are defined among patients having malignant lymphomas: 1) skin lesions of auto toxic genesis, 2) skin lesions determined with vascular pathology, 3) skin lesions due to hemolysis and hemostatic disorders, 4) skin lesions of those having cryoglobulinemia/cryofibrinogenemia, 5) skin lesions due to metabolic disorder, 6) infectious diseases.Conclusions: Lesions of auto toxic genesis and infectious diseases prevail among nonspecific skin changes when having malignant lymphomas. Patients having Hodgkin’s lymphomas experience dermal itching more often. Among B-cell lymphomas skin lesions are more pathognomonic for chronic lymphocytic leukemia, among T-cell lymphomas – for fungal mycosis. Nonspecific skin lesions, having arisen before typical clinical picture of malignant lymphomas allow to suspect and diagnose the main illness on time. Disappearance of skin lesions against the background of specific therapy can bear evidence to the efficiency of the malignant lymphomas’ treatment.

The authors considered the dermatoscopic vascular signs most frequently encountered in the practice of dermatologists, cosmetologists and oncologists in melanocytic and non-melanocytic skin tumors. The paper presents modern views on dermatoscopic diagnosis of skin tumors. Based on clinical experience and data from the literature, dermatoscopic features that occur in various melanocytic and non-melanocytic skin tumors are identified.

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