“…In spite of the association of hiatus hernia and lung disease, reviews of pulmonary fibrosis of unknown cause do not consider it as a possible aetiological factor (Scadding, 1956(Scadding, , 1960Herbert, Nahmias, Gaensler, and MacMahon, 1962; Livingstone, Lewis, Reid and Jefferson, 1964;Reid, Cuthbert, and Craik, 1965;Stack, Grant, Irvine, and Moffat, 1965). Castleman and Kibbee (1958) mentioned the presence of a hiatus hernia in a patient dying of idiopathic pulmonary fibrosis but drew no conclusion from this finding.…”