Mucotomy is a surgical procedure of excising the mucous membrane from an organ. This is done as part of several gastrointestinal surgeries, such as antireflux<unk>  for the treatment of Barrett's esophagus, colectomy for treating various intestinal disorders, and per-oral endoscopic myotomy for treatment of achalasia.
Mucosectomy
Helmet removal 
Pharyngeal flap surgery
Vestibulectomy
Gingivectomy
Metastasectomy
Frenuloplasty of tongue
Adenoidectomy