[Analysis of the reasons for the late detection of malignant tumors (based on data from the Voroshilovgrad Province Oncological Dispensary)].

The share of advanced malignant tumors is approximately 22.9%, the highest incidence rate (57.1%) being among patients aged 51--70 years. They show the following distribution for different sites: gastrointestinal tract--53.12; respiratory system--23.78; female genital organs--8.12; urinary system--6.13 and other sites--8.76%. Among the main causes of the detection of malignant tumors at advanced states are superficial, irregular check-ups, errors in clinical and roentgenologic diagnosis, latent course of the disease late application for medical aid and inadequate knowledge of oncology by general practitioners. With a view to improving the doctors' qualifications and raising the standards of mass screenings, Weeks of Oncologists are being conducted, short-term courses for advanced medical training and specialized oncological mass screenings for occupational tumors are organized; and Evening University of Oncology was established.