Intersphincteric resection (ISR) with coloanal anastomosis is an oncologically safe anus-preserving technique for very low-lying rectal cancers. Most studies focused on oncological and functional outcomes of ISR with very few evaluating long-term postoperative anorectal complications. Full-thickness prolapse of the neorectum is a relatively rare complication. This report presents the case of a 70-year-old woman presenting with full-thickness prolapse of the side limb of the side-to-end coloanal anastomosis occurring 2 weeks after the stoma closure and 2 months after a robotic partial ISR performed with the Da Vinci single-port platform. The anastomosis was revised through resection of the side limb and conversion of the side-to-end anastomosis into an end-to-end handsewn anastomosis with interrupted stitches. This study describes the first case of full-thickness prolapse of the side limb of the side-to-end handsewn coloanal anastomosis following ISR. Moreover, a revision of all reported cases of post-ISR full-thickness and mucosal prolapse was performed.
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International standardization and optimization group for intersphincteric resection (ISOG‐ISR): modified Delphi consensus on anatomy, definition, indication, surgical technique, specimen description and functional outcome Guglielmo Niccolò Piozzi, Krunal Khobragade, Vusal Aliyev, Oktar Asoglu, Paolo Pietro Bianchi, Vlad‐Olimpiu Butiurca, William Tzu‐Liang Chen, Ju Yong Cheong, Gyu‐Seog Choi, Andrea Coratti, Quentin Denost, Yosuke Fukunaga, Emre Gorgun, Francesco Guerra, Ma Colorectal Disease.2023; 25(9): 1896. CrossRef