Lung cancer metastasis-induced distal esophageal segmental spasm confirmed by individualized peroral endoscopic myotomy: A case report

Figure 1 Esophageal high-resolution manometry report. A: Low resting pressure of the upper esophagus sphincter; B: Normal pressure of the lower esophagus sphincter; C: Locally increased pressure in the middle and lower esophagus without normal peristalsis (Chicago classification II and III).