Prenatal ultrasound diagnosis of fetal intestinal volvulus and intussusception and misdiagnosis analysis

Abstract

Objective To investigate the characteristics of prenatal ultrasound sonography of fetal intestinal volvulus and intussusception, and analyze the misdiagnosis. Methods The prenatal two-dimensional and three-dimensional sonographic features of 11 patients with volvulus and intussusception confirmed by prenatal ultrasound and/or postnatal confirmation from June 2017 to December 2018 were summarized and the prognosis were followed up. Results Of the 11 fetuses, 8 had intestinal volvulus and 3 had intussusception. Of the 8 cases of intestinal volvulus, 6 cases were correctly diagnosed by prenatal ultrasound, and 2 cases were missed. Among the 6 cases diagnosed correctly, 3 cases showed a typical vortex on the two-dimensional sonogram. One case showed coffee beans sign, and 6 cases of three-dimensional sonograms showed that the intestines were coiled . Bread ring sign appeared in 3 cases of intussusception, and 1 case of intrauterine intestine was automatically reset. One of the 11 fetuses was induced to give birth, 1 was still in pregnancy; 9 cases were born and confirmed by surgery, 1 case died after operation. Conclusions Intestinal volvulus and intussusception have their characteristic sonographic features.When there is a short-term fetal bowel dilatation with meconium peritonitis, the existence of these two acute abdomen should be considered, but when it is accompanied by intestinal necrosis, typical signs of two-dimensional sonograms are missing, and three-dimensional imaging aids in diagnosis. Key words: Ultrasonography, prenatal; Fetal; Intestinal volvulus; Intussusception