2021 Volume 32 Issue 3 Pages 367-372
Inferior vena cava thrombosis (IVCT) is found in 3–15% of patients with deep vein thrombosis (DVT) and is more likely to occur in patients complicated not only with the common DVT factors but also with diseases such as congenital anomaly of the inferior vena cava (IVC), malignant disease, or trauma. Since pulmonary thromboembolism is complicated in 12% of patients at the time of IVCT diagnosis and post-thrombotic syndrome may occur in the chronic phase, IVCT needs to be managed appropriately from the acute phase over a long period of time. We report our experience of a patient who showed thrombus regression after rivaroxaban monotherapy for asymptomatic IVCT diagnosed on persistent diarrhea and leg weakness, although the involvement of a congenital thrombotic diathesis as a cause could not be clearly denied.