Fig. 5

An 86-year-old male presented with ascending colonic hemorrhage due to colonic diverticulosis. Transcatheter arterial embolization performed after hemostatic clipping through colonoscopy was unsuccessful. a inferior mesenteric angiography revealed small and significantly tortuous vasa recta of the sigmoid artery (arrow) without contrast extravasation near clipping (arrow); b superselective angiography through the vasa recta of the first sigmoid artery (S1) with a 1.6-Fr microcatheter (Carnelian Marvel S; Tokai Medical Products, Aichi, Japan) showed contrast extravasation at the distal end of near clipping (circle); c an attempt was made to place a 0.010-inch coil (the COMPLEX SilkySoft iED coil; KANEKA Medix, Osaka, Japan) measuring 1 mm in diameter and 3 cm in length, but the catheter kicked back, and it could not be placed tightly. Consequently, the coil was retrieved without detachment; d the same coil was placed using the intentional early detachment technique and was, therefore, placed tightly (arrowhead); e five additional 0.011-inch coils (Avenir; Wallaby Medical, Shanghai, China) were placed using the same technique, and the final angiogram did not reveal any contrast extravasation