Together with Consulting Editor Dr. Charles Lightdale, Dr. Qiang Cai has put together a comprehensive issue devoted to gastroparesis. Expert authors have contributed clinical review articles on the following topics: Epidemiology and Pathophysiology of Gastroparesis; Non-Diabetic Gastroparesis; Clinical Manifestations and Natural History of Patients with Gastroparesis; Evaluation of Patients with Suspected Gastroparesis; Symptomatic Management of Gastroparesis; Gastric Electrical Stimulator for treatment of Gastroparesis; Surgical Treatment for Gastroparesis; Botulinum Toxin Injection for Treatment of Gastroparesis; Stent Placement for Treatment for Gastroparesis; Technical Aspects of Per Oral Endoscopic Pyloromyotomy; Gastric Emptying Scintigraphy for Evaluation of Patients with Gastroparesis before Per Oral Endoscopic Myotomy; Outcomes of Per Oral Endoscopic Pyrolomyotomy in France; Outcomes of Per Oral Endoscopic Pyloromyotomy in China; Outcomes of Per Oral Endoscopic Pyloromyotomy in the United States.. Readers will come away with the information they need to improve endoscopic techniques and improve patient outcomes.