ABSTRACT
Introduction. During the Coronavirus-19 (Covid-19) pandemic, a significant increase in the frequency of complications in the form of venous thrombosis was observed. However, there is also the other side of the coin - an increase in the tendency to bleeding in the course of COVID19. Case Report. We present the case of a patient hospitalised in the COVID-19 Isolation Ward due to severe pneumonia in the course of SARS-CoV2 infection. She developed respiratory failure requiring a non-invasive mechanical ventilation. In addition, pulmonary embolism was diagnosed, the treatment with low molecule heparin was initiated. Soon, the patient developed a huge haematoma of the posterior compartment of the thigh causing deformation and dysfunction of the limb and resulting with acute haemorrhagic anaemia. Conclusion. Our article is a contribution to the discussion on the need to pay attention to the possibility of haemorrhagic complications in the course of anticoagulant treatment due to venous thrombosis in COVID-19 patients.