Figure 13 - Contour plot topographic analysis of esophageal motility and esophagram in diffuse esophageal spasm.

Plots show simultaneous standard manometry and contour plot topography from two water swallows from the same patient. a: High-amplitude, double-peaked and long duration propagated esophageal body contractions with partial LES relaxation. b: Simultaneous distal esophageal body contractions of normal amplitude and failed LES relaxation. c: Barium esophagram from the patient with a corkscrew-like morphology. This case illustrates the variable motility abnormalities that can be present at any one time with overlapping features of esophageal spasm and achalasia.