<prompt> Abbe-Estlander flap is used in repair of:BreastLipEsophagusNone of the above  <response>: The lip-switch Abbe-Estlander flap or a stair-step advancement technique can be used to repair defects of either the upper or lower lip. Microstomia is a potential complication with these types of lip reconstruction. Ref: Schwazs principle of surgery 9th edition, chapter 18 