Chyle leak after transposition of the aberrant left vertebral artery via 1-debranching thoracic endovascular aortic repair: a case report

Background Although the transposition of the aberrant left vertebral artery (ALVA) in 1-debranching thoracic endovascular aortic repair requiring zone 2 coverage for thoracic aneurysm with ALVA is reported to be an effective option, there are few reports of complications associated with the transposition of the ALVA. Case presentation An 87-year-old man underwent 1-debranching thoracic endovascular repair for a saccular thoracic aortic aneurysm with the aberrant left vertebral artery. Simultaneously, the transposition of the ALVA was performed to prevent cerebral complications because the left vertebral artery was dominant. Postoperative computed tomography revealed the reconstructed vertebral artery and no endoleak. However, a postoperative chyle leak occurred and was treated with lymphangiography. Conclusion Although the ALVA transposition is one of the better options, a chyle leak should be considered a serious complication of the procedure.