ABSTRACT
This report describes 4 cases of spontaneous retroperitoneal hematomas in the iliopsoas muscle in elderly patients with severe clinical course of COVID-19 infection during anticoagulant therapy. This complication was manifested by nonspecific symptoms, such as anemia, hematuria, discomfort and paresthesia in the lumbar or anterolateral surface of the abdomen, appearance of pain in hypogastrium and, as an extreme variant, hemodynamic instability with symptoms of hypovolemic (hemorrhagic) shock. In the defined clinical cases, the hematoma of the iliopsoas muscle was verified using a number of diagnostic studies (ultrasound examination of the abdominal organs and soft tissues, and/or computed tomography). Establishing the diagnosis of spontaneous hematoma required a temporary suspension of anticoagulant therapy. After conservative treatment, three out of four patients were discharged from the hospital with recovery. © 2021, Professionalnye Izdaniya. All rights reserved.