Hepatic portal venous gas complication associated with the thoracic endovascular aortic repair for aortic dissection: a case report and literature review.

Aortic dissection (AD) is a serious disease with a higher mortality. The thoracic endovascular aortic repair (TEVAR) is a first line regimen for aortic dissection. Hepatic portal venous gas (HPVG) is a rare disease, and its definite mechanism is unknown.