The problem of lung cancer (LC) is becoming increasingly relevant every year. According to the cancer registry of the Altai Regional Oncology Center, the incidence of lung cancer in 2019 was 114.8 per 100 thousand population for men, 19.3 per 100 thousand population for women; in 2020 – 96.8 and 16.8, respectively. In 2021, the incidence was 108.9 per 100 thousand population. Diagnostic rates in 2022 among patients with respiratory cancer were disappointing, since at the time of diagnosis 42.2% had stage IV of the disease, 27.9% had stage III, 16.3% had stage I and 12.9% had stage II. and in 0.7% of cases the stage was not established.
When analyzing the distribution of LC patients of different age groups depending on the tumor histotype, it was found that the majority are adenocarcinoma and squamous cell LC – 85%. Our study used MSCT data from 485 patients with LC aged from 45 to 80 years. Digital analysis of the scans was carried out using the “Radiologist+” program (Russia, Barnaul), which allows direct sampling of average pixel densities in tabular form in selected areas of interest from files in DICOM format for subsequent analysis and statistical processing. The resulting densitometric indicators were fed to the inputs of the artificial neural network. The effectiveness of differential diagnosis of histological forms, taking into account the presence or absence of tobacco smoking in patients: sensitivity 85.8%, specificity 85.0%, accuracy 85.4%.