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(A) High-resolution esophageal manometry (HRM) showing ablation of lower esophageal sphincter (LES) pressure in a patient with achalasia who underwent successful myotomy. The white dashed line shows a non-relaxing LES with low pressure. (B) HRM showing persistently high basal LES pressure in a patient with achalasia who has persistent symptoms post-myotomy. The white dashed line shows a non-relaxing LES with high basal pressure.
