Rectal Adenocarcinoma Metastasising to an Anal Fistula 3 Months after Resection of the Primary Cancer

Endoscopic excision of synchronous large bowel polyps in the presence of colorectal carcinoma: is the fear of malignant cell implantation justified? A systematic review of the literature

“…These have a well‐recognized role in anastomotic recurrence , suture line implantation and seeding onto stapling devices . Rarely, colorectal adenocarcinoma cells can implant into the tracks of a fistula‐in‐ano (Table ), haemorrhoidectomy scars and other miscellaneous sites of anal trauma .…”