Fig. 3

Features of Yun type IIb dissection. Axial CECT showing the true and thrombosed false lumens above the LRV plane (A) and the cyst-like residual false lumen in the thrombosed false lumen on the LRV (pink arrow) plane (B). Longitudinal CTA showing unthrombosed false lumen (black arrow) and thrombosed false lumen (C) and two cyst-like residual false lumens (D), one cyst-like residual false lumen (E), and no residual false lumen (G) in the thrombosed false lumen. CTA volume rendering (F) showing a cyst-like residual false lumen in the thrombosed false lumen. The yellow arrow represents the true lumen; the white arrow represents the thrombosed false lumen; and the blue arrow represents the cyst-like residual false lumen. CECT contrast-enhanced computed tomography, LRV left renal vein, CTA computed tomography angiography