Bilateral ovarian vein thrombosis without underlying conditions: A case report.

Ovarian vein thrombosis (OVT) usually occurs on the right side in women with underlying conditions such as pelvic diseases and thrombophilia or during the postpartum period. Here, we present a patient with bilateral OVTs without underlying conditions. A 63-year-old woman without remarkable past or family histories complained of mild lower abdominal pain. Computed tomography revealed bilateral OVTs, with the right-sided thrombus nearly progressing into the inferior vena cava. The presence of symptoms and risk of thrombus extension/pulmonary embolism (PE) led us to administer an oral anticoagulant (rivaroxaban) promptly. Her symptom improved gradually and bilateral OVTs disappeared by 3 months without any evidence of PE. The present case suggests that OVT can occur in a woman without underlying conditions, and the use of an anticoagulant may be a treatment option in such a case.