Although heterotaxia or transposition of the viscera has been known since 1643, when Petrus Severimus1 reported one of the earliest authentic cases, failure of rotation of the stomach, which Nau prefers to designate as "incomplete embryonic diaphragmatic hernia," is very exceptional. In the latter type of case the stomach is situated above the liver.
Several excellent contributions have been made on the subject of heterotaxia. Gruber,2 in 1865, collected seventy-nine instances, and Kuchenmeister,3 in 1893, increased the number of known cases to 149. Price,4 in 1895, reported 190 cases from the literature, and Arneille5 brought up the total to 254 in 1902. With the advent of the roentgen ray, the number of authentic instances of transposition of the viscera has grown prodigiously.
On the other hand, there is a great paucity in the report of cases of nonrotation of the stomach. Poillard,6 in 1903,