Comparison of videofluoroscopy and impedance planimetry for the evaluation of oesophageal stenosis: a retrospective study.

• A 14-mm tablet can demonstrate oesophagogastric junction narrowing in patients with dysphagia. • Type of passage of a tablet enables estimation of oesophageal luminal diameter. • Videofluoroscopy and impedance planimetry correlate significantly regarding tablet impaction and residual oesophageal lumen.