Table 2.

Differential diagnosis table for uterine intravenous leiomyomatosis with intracardiac extension.

Intravenous thrombus	Not vascularized and therefore does not demonstrate any enhancement on dynamic CT scan
Budd-Chiari syndrome	Thrombus is observed in the hepatic vein and hepatic segment of inferior vena cava, causing partial or complete venous obstruction; clinical setting includes liver and spleen enlargement, severe ascites, varicosity in the thoracic and abdominal walls as well as lower extremities, symptoms which lack in UIL
Right atrial myxoma	Mainly limited within the heart chamber, and generally does not affect the IVC
Primary leiomyosarcoma	A malignant condition that originates from inferior vena cava; metastases to liver, lung and retroperitoneal lymph nodes may be present
Endometrial stromal sarcoma	Have plenty of spiral arteries on CTA images