Figure 3d: Transverse portal venous phase CT images in 60-year-old man with HCC obtained (a, b) before and (c, d) after TACE of the IPA. (a, b) Scans obtained at the level of the celiac trunk (a) and the superior mesenteric artery (b) show thick appearance (arrowheads) of the crural portion of the right hemidiaphragm. (c, d) Scans obtained at the level of the celiac trunk (c) and the superior mesenteric artery (d) 2 months after TACE of the IPA show diffuse thinning (arrowheads) of the right hemidiaphragm. The scanned levels appear somewhat different from those on the pre-TACE CT scans owing to the elevation of the right diaphragm and compensatory overinflation of the left diaphragm. The crural portion of the left hemidiaphragm shows no definite change.