Ciliated hepatic foregut cyst of the left hepatic vein.

Ciliated hepatic foregut cyst is an extremely rare condition observed most frequently in the left hepatic lobe of young men. This report describes an unusual case of ciliated hepatic foregut cyst with involvement of the left hepatic vein in a 68-year-old woman. Preoperative imaging studies demonstrated characteristics of a solid tumor that were suggestive of a leiomyosarcoma of the inferior vena cava. Magnetic resonance venography confirmed a mass in the anterolateral wall of the inferior vena cava or in the left hepatic vein. This report confirms the unusual occurrence of this tumor and the confusing factors related to the diagnostic workup.