Gastrointestinal Tract Sonography in Fetuses and Children by Alain Couture MD, Catherine Baud MD, Jean Louis Ferran MD,

By Alain Couture MD, Catherine Baud MD, Jean Louis Ferran MD, Magali Saguintaah MD, Corinne Veyrac MD (auth.)

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Sonography of the gastrointestinal tract in fetuses, neonates and kids involves no recognized organic probability, allows serial scanning and will supply details unobtainable with the other imaging modality. In skilled fingers it may be used because the preliminary imaging procedure in a couple of gastrointestinal illnesses and prerequisites. This booklet presents a finished account of the present state-of-the-art concerning sonography during this context. An introductory bankruptcy compares the advantages of sonography and magnetic resonance imaging of the fetal gastrointestinal tract. next chapters concentrate on the strategy, pitfalls and findings in a wide selection of purposes, together with antropyloric illnesses, bowel obstruction, bowel wall thickening, colitis, appendicitis, a few sorts of intussusception, belly wall and umbilical abnormalities, intraperitoneal tumors, and trauma. In each one case the sonographic morphology is taken into account intensive simply by top of the range illustrations. A concluding bankruptcy contains a quiz in accordance with 15 case reviews. Gastrointestinal Tract Sonography in Fetuses and Children can be of price to all with an curiosity during this field.

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1998b; Favre et al. 2004). MRI has high sensitivity for demonstrating the meconial character of ascitic fluid (Fig. 49). A large mass, with slightly echodense content and calcified wall is characteristic of meconium pseudo cyst (Fig. 50). When it is echofree at US, it appears meconial on MRI (Fig. 51) (Veyrac et al. 2004; Wong et al. 2006). Imaging provides decisive arguments for predicting neonatal surgery: persistent ascitis, large meconial pseudo cyst, dilated small bowel proximal-to a mechanical obstruction.

When the risk is known (heterozygous CFTR mutation) an enzymatic profi le of bowel obstruction is correlated with increased viscosity of intestinal secretions. A normal profi le excludes cystic fibrosis. However, there is a narrow diagnostic window (from 17 to 21 weeks). In case of hyperechogenic fetal bowel, assessment of the amniotic fluid has poor interest, because the abnormal sonographic findings are infrequently observed before 22 weeks. At last, before 22 weeks, the enzymatic profi le is not specific of cystic fibrosis (it may be seen in low intestinal occlusion, trisomy 21).

A 35-week-fetus. Distal small bowel atresia. The dilatation did not involve the proximal bowel, especially the jejunal loops of left abdomen that kept a normal high T2 fluid signal (circle) 40 A. Couture a b Fig. 37a,b. A 34-week-fetus with 24-h disappearance of fetal motion. a Some loops was dilated (arrow) (16 mm), hyperperistaltic. b Distally, there was a spiral aperistaltic avascular intestinal mass. Suspicion of volvulus. Urgent caesarean delivery: volvulus with necrosis and resection of 40 cm small bowel (Dr.

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