Budd-Chiari syndrome

A 36-year-old woman comes to the emergency department because of abdominal pain that has become increasingly severe over the the past 3 days. Physical examination shows hepatomegaly and shifting dullness. The patient reports no previous health concerns aside from an appendectomy 12 years ago. She has taken oral contraceptive pills for 2 years. A liver biopsy is performed and shows severe centrilobular congestion and necrosis. Which of the following best describes this patient’s underlying condition?