Risk factors and prognosis of symptomatic postpartum ovarian vein thrombosis in 2 French prospective cohort studies

Ovarian vein thrombosis (OVT), an unusual site of venous thromboembolism (VTE), occurs mostly during gynecological surgery, cancer, and postpartum. Symptomatic postpartum ovarian vein thrombosis (sPOVT) is distinguished from other medical contexts by a lower prevalence (OVT occurred in 0.06% of deliveries vs 37.0% for pelvic cancer), younger age, obstetric-related risk factors (endometritis and cesarean delivery), abdominal pain and fever in 100.0% for obstetrics vs 17.0% for pelvic cancer, more serious complications (extension to the inferior vena cava or left renal vein and concomitant pulmonary embolism [PE] or deep vein thrombosis [DVT]), and potentially fewer recurrences (3.6% after OVT in the postpartum period vs 17.1% after OVT for pelvic cancer) [1–3].