Topical composition for the treatment of mucosal lesions It relates to a topical composition comprising specific amounts of : a) a hyaluronic acid or a pharmaceutically or veterinary acceptable salt thereof, b) one or more adhesive agents, and c) a non-absorbable antibiotic; to delivery devices comprising it; and to its uses in medicine, in particular, in the treatment and/or prevention of mucosal lesions; in the prevention of postpolypectomy syndrome; as adjuvant therapy to mechanical treatments in gastrointestinal perforations, and as sealant treatment in surgical anastomoses and leaks or fistulas in gastrointestinal tract.