Endoscopic measurement of hiatal hernias: is it reliable and does it have a clinical impact? Results from a large prospective database.

In summary, endoscopically and manometrically measured hiatal hernia size are highly significantly correlated. Patients with refractory reflux symptoms and a hernia size of 4 cm are very likely to have GERD. In the future, this finding could greatly simplify the diagnosis of GERD.