title: Use of a dinner fork as a retractor during transanal excision of large rectal villous adenomas.
mesh_terms: D000236:Adenoma / Q000601:surgery*; D003107:Colorectal Surgery / Q000295:instrumentation*; D006801:Humans; D012004:Rectal Neoplasms / Q000601:surgery*; D013525:Surgical Instruments