PA can present with polyhydramnios or fetal gastric dilatation on antenatal ultrasonography
8. PA is usu-ally suspected when neonates develop recurrent nonbilious vomiting and abdominal distension immediately after birth. On direct abdominal radiography, the sto-mach is dilated, and there is no other gas distal to the stomach. In our case, the angle of his was narrowed due to excessive gastric dilatation, and the abdomen was found to be free of gas because gas could not pass into the stomach
9. PA is anatomically divided into three subgroups: (a) only the pyloric membrane or web (57%), (b) the pyloric canal occluded by a solid cord (34%), and (c) an atrophic pylorus with a gap between the stomach and duodenum (9%). The pyloric memb-rane is treated with Heineke-Mikulicz pyloroplasty, while type b and c variations are usually treated by excision of the atretic segment and gastroduodenostomy
3,10. In our case, there was a type B pyloric atresia, and we performed gastroduodenostomy. All patients with PA should be screened in terms of trache-oesophageal fistula, renal and ureteral anomalies, and EB
11.
EB is an inherited, autosomal recessive, bullous disease characterized by mucosal erosions and skin blisters. Numerous subtypes of EB are described and are divi-ded into three major groups: EB simplex, dystrophic EB, and junctional EB. Junctional EB is further divided into three subgroups: Herlitz, non-Herlitz, and junctional EB with PA, also known as Carmi syndrome12.
Carmi syndrome is an extremely rare autosomal reces-sive genetic disorder characterized by the coexistence of PA and junctional EB, and with aplasia cutis congenita is characterized by localized or widespread absence of skin in approximately 28% of patients13. Our case was also diagnosed with aplasia cutis congenita. The prognosis of patients with Carmi syndrome is also poor, with mortality rates of up to 75%, mostly due to sepsis and renal failure, with a median time to death of 30 days13.
Carmi syndrome should be excluded in every neonate with PA, regardless of the degree of skin blistering. Similarly, when a patient presents with clinical signs of EB, as in our case, even if no gas is seen in the abdomen, the possibility of Carmi syndrome should be considered in newborns. It should be noted that a gas-free abdominal x-ray and pyloric atresia may mimic esophageal atresia. Carmi Syndrome follows an autosomal recessive inheritance pattern. Families should be provided with genetic counseling before having subsequent children. Families can be informed about Carmi syndrome if findings such as polyhydramnios, gastric enlargement, and lower-limb anomalies are detected during prenatal diagnosis with ultrasonography.