Abstract: Two clinical cases of treatment of spontaneous hematomas in elderly patients with COVID-19 using endovascular diagnostic and treatment methods are presented. Aim: was to show the effectiveness of endovascular hemostasis and, in some cases, there is no alternative to the use of other techniques. Material and methods: we presented two clinical cases and analyzed the work of domestic and foreign authors on the prevention of venous thrombosis in patients with COVID-19 and endovascular treatment of spontaneous hematomas in patients with COVID-19. Results: article describes two case reports of catheter embolization in patients with spontaneous hematoma during treatment of severe COVID-19. Elderly patients underwent prevention of thromboembolic complications with low-molecular-weight anticoagulants in prophylactic dosages; during therapy, soft tissue hematomas were revealed in one case in abdominal wall, in the other in chest. In both cases, conservative treatment was ineffective; bleeding required transfusion of blood components. In both cases, embolization was effective, and patients' condition stabilized. In one case, the progression of respiratory failure led to death, the second patient was discharged for out-patient treatment. Conclusion: catheter embolization for arterial bleeding can be used as monotherapy or as a stage of stabilizing the patient before open surgical treatment.
