The occurrence of congenital atresia along the gastro-intestinal tract is by no means a rare condition, Davis and Poynter1 having assembled the reports of 392 cases of occlusion between the pylorus and anus. A further analysis shows that the duodenum is the site of predilection, as the lesion was found there in 134 cases of the series.
Right internal hernia, on the other hand, is a condition which warrants report whenever it is found, since Moynihan2 was able to collect but seventeen cases in 1906, when his classical monograph appeared. Herniation into the infraduodenal fossa, according to this author, is the rarest of all the types of internal hernia. Armand,3 in his Thèse de Lyon, 1903, reported the only case so far on record.
The subjoined case is presented because of the combination of the two foregoing defects in one individual; because of the rarity of such
MORTON JJ. ATRESIA OF THE DUODENUM AND RIGHT INTERNAL HERNIA: REPORT OF A CASE. Am J Dis Child. 1923;25(5):371–378. doi:https://doi.org/10.1001/archpedi.1923.01920050034005
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