Congenital Pyloric Atresia in Siblings

To the Editor.—I am writing to comment on an interesting article in the Archives, "Congenital Pyloric Atresia in Siblings" by Tan and Murugasu (106:100-102, 1973). According to the authors, their cases constitute the first recorded incidence of pyloric atresia in siblings. I have published a report of one case of pyloric atresia occurring for the second time in the same family,¹ and on reviewing the literature I found two more papers dealing with the familial occurrence of this abnormality.^2,3 Therefore, congenital pyloric atresia with familial occurrence has been reported four times^1-4 since 1968, when the first publication on this subject appeared.²

Also, there is confusion as to the total number of reported cases of congenital pyloric atresia, regardless of familial occurrence. In the same article it is stated that 17 cases have been described, whereas in another article,⁵ appearing two months later, it is stated