Nickan Research Institute Journal of Renal Injury Prevention 2345-2781 12 1 2023 03 01 Renal vein thrombosis in a recent COVID-19 patient; a case report e31997 e31997 10.34172/jrip.2022.31997 EN Hosna Mirfakhraee https://orcid.org/0000-0003-1889-6389 Samaneh Saghafian Larijani https://orcid.org/0000-0001-5530-8203 Zhale Zandieh https://orcid.org/0000-0001-6344-5259 Adnan Tizmaghz https://orcid.org/0000-0003-4384-6543 Faranak Olamaeian https://orcid.org/0000-0001-6677-8059 Ali Tayebi https://orcid.org/0000-0003-3164-9649 Maryam Niksolat https://orcid.org/0000-0002-3725-7462 Journal Article 10.34172/jrip.2022.31997 2021 11 05 2021 12 05 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.