V-Y flap for reconstruction after perianal resection of CIS
Perianal CIS should be resected if the lesion is large, invasion cannot be ruled out or if it extends into the anal canal. Split thickness skin grafts do not take well around the anus and strictures may occur.
The V-Y advancement flap is ideal as it can be advanced 2–3 cm with an excellent blood supply.
This video will show the technique of resection of a large perianal CIS extending into the anal canal, preservation of the anal sphincter and reconstruction with V-Y flap.
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