In 1913 I1 reported three cases of congenital atresia of the esophagus with necropsies which I had seen within a period of one year. In two succeeding years four additional cases have come under my observation. In my own experience no other congenital anomaly of the intestinal tract has approximated even remotely so great a number with the possible exception of hyperplastic stenosis of the pylorus. Among my colleagues (Drs. Richter, Grulee, Hess, Michael, Jackson and others) I have knowledge of at least six or seven more cases. In all of these cases there was identically the same clinical and anatomic picture. In all of them the upper end of the esophagus ended blindly, the lower end connected the stomach with the trachea—the so-called "inosculating" type of atresia of the older writers.
In 1884 Sir Morrell Mackenzie2 collected 62 cases of congenital atresia of the esophagus
JOSEPH BRENNEMANN. CONGENITAL ATRESIA OF THE ESOPHAGUSWITH REPORT OF FOUR ADDITIONAL CASES, WITH THREE NECROPSIES. Am J Dis Child. 1918;16(3):143–153. doi:10.1001/archpedi.1918.01910150010002