The article presents a brief review of literature which shows the characteristic of bronchopulmonary and cardiovascular diseases that most often cause secondary absolute hypoxic erythrocytosis. The information about pathogenesis of blood changes at this nosology is given. The principles of differential diagnosis between secondary absolute hypoxic erythrocytosis and chronic myeloproliferative diseases, i.e. polycythemia vera and idiopathic myelofibrosis in erythremia stage are set. As an example three clinical cases of personal experience of the authors are given: 1) the patient who developed hypoxic erythrocytosis against chronic pulmonary heart disease formed due to a combination of COPD and Pickwick syndrome and "sleep apnea"; 2) the patient admitted to hospital initially only in connection with changes in the blood (erythrocytosis) for differential diagnosis and who was revealed to have arteriovenous malformation of the lung vessels; 3) the case of primary pulmonary hypertension diagnosis in a young patient with multiple comorbidities.

Hematogenous thrombophilia is often encountered in the clinical practice of doctors of all specialties. The article presents current data on the diagnostic of this pathology. In most cases pulmonary embolism is a clinical onset of hereditary hematogenous thrombophilia. According to the authors of this article, pulmonary embolism occurred in 60% of surveyed patients with hereditary thrombophilia hematogenous. Current antithrombotic therapy is quite effective in this category of patients. Three cases of personal experience of the authors when there was diagnosed a combined form of hematogenous thrombophilia with serious thrombotic complications in anamnesis are shown. Adequate secondary prevention of thrombosis contributed to further disease-free course of the disease.

The publication provides an overview of the literature devoted to modern methods of diagnosis of malignant pleural mesothelioma (MPM). The analysis of medical records of 14 MPM patients who were treated in the Amur regional clinical hospital in 2009-2014 was done. One case is dealt with in detail. Difficulties in diagnosing MPM happen due to the following factors: the early symptoms of this tumor are not specific, and patients often seek help in the advanced stages; the difficulty of differentiation between benign diseases of the pleura and metastasis of other tumors in the pleura; not full availability of computed tomography (CT) and a VATS biopsy; insufficient awareness of primary care physicians about the features of MPM course. To improve the diagnosis of MPM it is recommended to perform CT of the chest as the primary method of diagnosis in individuals of 50 years old, especially in those exposed to asbestos in the past.