Abstract：Objective To investigate the clinical value of high frequency ultrasonography in diagnosing digestive tract malformation in children. Methods Eighty children with suspected digestive tract malformation in Jiujiang Maternal and Child Health Hospital from January 2016 to September 2021 were selected as the research subjects. High-frequency ultrasound and X-ray examination were performed on all the children, and the value of diagnosis of digestive tract malformation was analyzed with the surgical results as the gold standard. Results Among the 80 cases, 75 cases were diagnosed with gastrointestinal malformation by operation. Including 22 cases of hypertrophic pyloric stenosis (27.50%), 20 cases of malrotation with midgut volvulus (25.00%), 20 cases of anal atresia (25.00%), 5 cases of intestinal duplication malformation (6.25%), 4 cases of intestinal atresia (5.00%), 2 cases of megacolon (2.50%), and 2 cases of duodenal flap stenosis (2.50%). The sensitivity, specificity and accuracy of high-frequency ultrasound were 96.00% (72/75), 80.00% (4/5) and 95.00% (76/80), respectively. And the Kappa value consistent with gold standard was 0.640. The sensitivity, specificity and accuracy of X-ray examination were 78.67% (59/75), 60.00% (3/5) and 77.50% (62/80), respectively. And the Kappa value consistent with gold standard was 0.168. Conclusion High frequency ultrasound diagnosis of digestive tract malformation has a high coincidence rate, in the diagnosis of hypertrophic pyloric stenosis, anal atresia, intestinal duplication malformation, hirschsprung′s colon has a certain advantage, the clinical diagnostic value is good.
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