fig8

Figure 8. (A) Type IA: entry flow is perigraft flow at the proximal edge of the stent graft that allows continued antegrade flow into the false lumen through the primary entry tear. (B) Type IB: entry flow is distal perigraft flow caused by a tear in the intimal membrane adjacent to the distal edge of the endograft [distal stent graft-induced new entry (SINE)] or an uncovered distal fenestration. FL: False lumen; TL: true lumen. (C) Type II: entry flow is continued retrograde false lumen perfusion through an arch branch (e.g., left subclavian artery as demonstrated in the illustration) or intercostal or bronchial artery. (D) Type R: entry flow is antegrade flow from the true lumen to the false lumen through septal, visceral, or distal fenestrations. From Lombardi et al.^[3] (with permission).