The Analysis of the Fetal Abdominal Wall and Gastrointestinal Tract Abnormalities in a Single Tertiary Center

OBJECTIVE: We aimed to evaluate the fetuses with gastrointestinal anomalies and anterior abdominal wall defects detected in the prenatal period in our clinic and to analyze their perinatal outcomes. STUDY DESIGN: This retrospective study analyzed the data of 67 cases evaluated by the perinatology department of the Basaksehir Cam and Sakura City Hospital between January 2021 and May 2023 with a diagnosis of fetal anterior abdominal wall and gastrointestinal tract abnormalities. RESULTS: A total of 67 cases were included in our study with a mean maternal age of 26.4 ± 3.1 years and a median gestational week of first assessment at our center of 22 weeks (12-39 weeks). The most common anterior abdominal wall malformations were omphalocele (n=29, 43.3%) and gastroschisis (6 cases, 9.0%), and the most common fetal gastrointestinal tract anomalies were duodenal atresia (n=10, 14.9%), dilated bowel (n=5, 7.4%), and intestinal atresia (n=4, 5.9%). While genetic testing was carried out in 18 cases (27%), chromosomal abnormality was found in 6 (9.0%) cases. Termination of pregnancy was performed in 6 cases (9.0%). Postnatally, surgery was performed in 49 cases (73.1%) with a diagnosis of postpartum omphalocele, duodenal atresia, gastroschisis, intestinal and anal atresia. An uneventful surgical course was recorded for 47 cases that underwent surgery. CONCLUSION: The most common abdominal wall defects are omphalocele and gastroschisis, and the most frequent gastrointestinal anomalies are small bowel abnormalities (duodenal atresia, dilated bowel, intestinal atresia) in our study cohort. These abnormalities might be an isolated anomaly or part of a syndrome or associated with chromosomal abnormalities. The prognosis for infants with gastrointestinal malformation depends on the presence of associated anomalies or karyotype anomalies.