Informativity of the thermography method in patients with pigmented skin tumors
O.M. Konopatskova, Y.V. Stanchina
Saratov State Medical University
In recent years, there has been an increase in the number of pigmented skin tumors, manifested by a diverse clinical picture. This provision confirms the need to improve accessible and informative diagnostic methods that help the doctor to quickly and accurately determine the diagnosis before the start of correct treatment. The use of non-invasive techniques for the differential diagnosis of melanoma and pigmented nevi of the skin allows you to decide on further tactics, minimizing the subjectivity of the doctor when making a diagnosis. Of the greatest interest are non-invasive research methods, suitable for both diagnosis, at the first treatment of the patient, and for dynamic observation. One of such non-contact methods of diagnosing pigmented skin tumors includes computer thermography, which allows obtaining the necessary reliable information about the studied pigmented skin tumor without violating its integrity. The aim of the study was to study and evaluate the informativeness of the computer thermography method in patients with pigmented skin tumors (pigmented nevi and melanoma). The results of the analysis of differences in the thermal imaging picture obtained during thermography demonstrate the presence of a direct correlation between the tumor size and temperature asymmetry (∆Т), which is confirmed by the values of the Pearson linear correlation coefficient (r) and the multiple linear correlation coefficient (R) both in nevi (r=0.47; R=0.72, p≤0.05) and in melanoma (r=0.61; R=0.67, p≤0.05). In addition, the dependence of the change in невT in nevi on the presence of morphologically confirmed proliferative activity (rs=0.6*; τ=0.52*; p≤0.05), as well as from the Clark invasion level in melanoma (rs=0.53; τ=0.41; p≤0.05). When studying the influence of proliferative processes in nevi on the presence of a "tumor field", a direct correlation was revealed (rs=0.7; τ=0.7; p≤0.05), and the nature and strength of the connection allow it to be used in the diagnosis and choice of tactics.
pigmented nevi; melanoma; noninvasive diagnostics; thermography; thermal heating area; "tumor field"; temperature asymmetry of the tumor.
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