| Pes | esophageal pressure |
|---|---|
| PSDES | primary symptomatic diffuse esophageal spasm |
| RES | radionuclide esophageal scintigraphy; reticuloendothelial system |
| REST | Raynaud's phenomenon, esophageal motor dysfunction, sclerodactyly, and telangiectasia [syndrome]; re... |
| SDES | symptomatic diffuse esophageal spasm |