Instances of true hernia at the esophageal hiatus were recorded not infrequently in the literature of the early part of this century, but, with improvement in roentgenographic technic during the past twenty years and with accumulating interest in the subject, the rather high incidence of the condition has been recognized. The incidence in relation to the number of gastrointestinal roentgen studies made by several authors has varied from 0.75 to as high as 2.9 per cent of the series.1 This must not be interpreted as evidence that such a high percentage of the general population has hiatal hernia, because the majority of the roentgen examinations were made for persons with complaints referable to the gastrointestinal tract.
Åkerlund2 in 1926 cited 60 cases recorded in the literature up to that time and reported 24 of his own. Harrington3 reported 680 cases seen at the Mayo Clinic between Jan.
MURPHY WP, HAY WE. SYMPTOMS AND INCIDENCE OF ANEMIA IN HERNIA AT THE ESOPHAGEAL HIATUS. Arch Intern Med (Chic). 1943;72(1):58-68. doi:10.1001/archinte.1943.00210070066006