[The studying of public health and health care as obligatory component of program of residency training].

The article considers the teaching of the discipline "Public Health and Health Care" to residents of all specialties. For analyzing attitude of residents to studying the discipline "Public Health and Health Care", as well as improvement of training physicians at the stage of residency and their full mastery of necessary competencies, survey was carried out on sampling of 424 residents of the second (graduate) year of training. The number of questions were formulated to be included into questionnaire to obtain data about respondents (age, gender, region of study, citizenship, experience of working at medical position) and to identify their attitude to the study of the discipline "Public Health and Health Care" " in residency (sections of program as practically applicable, assessment of form of teaching the discipline and use of educational technologies, including remote and digital learning, choice of universal and general professional competencies).

[Feasibility of differential diagnosis of isolated lesions of mediastinal lymph nodes].

Surgical procedures such as mediastinoscopy (101 cases) and parasternal mediastinotomy (6 cases) were used for improvement of diagnosis of lesions in mediastinal organs. As a result of complex examination including histological methods, malignant lymphoma was diagnosed in 12 cases, Boeck's sarcoidosis--75, mediastinal form of lung cancer--8, tuberculosis of mediastinal lymph nodes--6 and other lesions of organs of the mediastinum--in 6 cases.

[Direct suprarenoscopy in the precise determination of the operability of lung cancer patients].

A new procedure for establishing the operability of lung cancer patients--direct suprarenoscopy--is discussed. The procedure was used in examining 6 patients with lung cancer. A detailed discription as well as indications and contraindications are given.