Esophageal atresia and tracheoesophageal fistula: prenatal sonographic Manifestation from early to late pregnancy.

Prenatal diagnosis of EA/TEF is not feasible in early pregnancy. A small/absent stomach may be visualized as early as 15 weeks of gestation. Polyhydramnios does not develop before mid-trimester. An esophageal pouch can be detected as early as 22 weeks, on a targeted scan, in suspected cases. The detection rate of all 3 signs increases with advancing pregnancy, peaking at the third trimester. The early and mid-trimester anomaly scans perform poorly as a screening and diagnostic exam for EA/TEF. This article is protected by copyright. All rights reserved.