RT Book, Section A1 Hunter, John G. A1 Spight, Donn H. A1 Sandone, Corinne A1 Fairman, Jennifer E. SR Print(0) ID 1162530049 T1 Heller Myotomy with Partial Fundoplication T2 Atlas of Minimally Invasive Surgical Operations YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9780071449052 LK accesssurgery.mhmedical.com/content.aspx?aid=1162530049 RD 2024/03/28 AB Laparoscopic Heller myotomy is indicated for individuals with well-documented achalasia. This procedure may also be used in association with diverticulectomy for patients with epiphrenic diverticula, and for hypertensive lower esophageal sphincter (LES). The preoperative evaluation of the patient with achalasia includes a barium swallow, esophageal motility study, and upper endoscopy. For atypical presentations, a CT scan is often added to rule out extrinsic compression of the distal esophagus by tumor, aortic aneurysm, or pancreatic pseudocyst. These entities may mimic the endoscopic and radiologic findings of achalasia and are therefore called pseudoachalasia. A Nissen fundoplication that is too tight can create pseudoachalasia as well.