Objective: the authors report their experience about the sur gical treatment of a epiphrenic diverticulum (ED) associated with motor disfunctions and gastroesophageal reflux. Design: report of 1 case; evaluation of effectiveness of the treatment. Setting: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico, University of Palermo. Interventions: thoracotomic diverticulectomy + esophageal extramucosal myotomy + antireflux procedure. Results: resolution of sintomatology. Negative the follow up. Conclusions: ED is the epiphenomenon of esophageal motor disfunctions. The surgical procedure is based on their comprehension and on the study of this factors.