Renal vein thrombosis in a recent COVID-19 patient; a case report

We report a 74-year-old male with a recent history of COVID-19 pneumonia who was admitted with acute periumbilical and left lower quadrant pain and respiratory distress. Laboratory data showed pre-renal azotemia and microscopic hematuria. An abdominopelvic computerized tomography (CT) scan with intravenous contrast was conducted, showing signs of right renal vein thrombosis (RVT) with extension to inferior vena cava (IVC), without any evidence of renal ischemia. The patient did not have any risk factors for thrombosis except for probable hypercoagulopathy due to COVID-19 and diabetes mellitus. He was not an appropriate candidate for surgical or radiologic thrombectomy, thus received heparin infusion accordingly. Unfortunately, he died after the cardiopulmonary arrest on the second day of admission. Considering his respiratory distress, we suspect pulmonary embolism as the most probable cause of death.