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Fetal MR in the evaluation of pulmonary and digestive system pathology.

Martin C, Darnell A, Escofet C, Duran C, Pérez V - Insights Imaging (2012)

Bottom Line: Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common.As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study. • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

View Article: PubMed Central - PubMed

Affiliation: Radiology Department, UDIAT CD, Institut Universitari Parc Taulí-UAB, Sabadell, Spain.

ABSTRACT

Background: Prenatal awareness of an anomaly ensures better management of the pregnant patient, enables medical teams and parents to prepare for the delivery, and is very useful for making decisions about postnatal treatment. Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common. As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.

Methods: Magnetic resonance imaging (MRI) enables excellent discrimination among tissues, making it a useful adjunct to ultrasonography (US) in the study of fetal morphology and pathology.

Results: MRI is most useful when US has detected or suspected anomalies, and more anomalies are detected when MRI and US findings are assessed together.

Conclusion: We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study.

Teaching points: • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

No MeSH data available.


Related in: MedlinePlus

Duodenal stenosis due to Ladd’s band. Fetus at 32 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image: the duodenum is greatly dilated until the third portion (short arrow); the stomach seems normal; there may be gastroesophageal reflux. The volume of amniotic fluid is normal. The large bowel is in the left abdomen (long arrows). b X-rays after birth showing marked dilatation of the duodenum. At surgery, intestinal malrotation and Ladd’s band causing duodenal occlusion were found, as well as Meckel’s diverticulum, which was undetected at US and MR
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Fig9: Duodenal stenosis due to Ladd’s band. Fetus at 32 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image: the duodenum is greatly dilated until the third portion (short arrow); the stomach seems normal; there may be gastroesophageal reflux. The volume of amniotic fluid is normal. The large bowel is in the left abdomen (long arrows). b X-rays after birth showing marked dilatation of the duodenum. At surgery, intestinal malrotation and Ladd’s band causing duodenal occlusion were found, as well as Meckel’s diverticulum, which was undetected at US and MR

Mentions: In cases of duodenal atresia or marked duodenal obstruction, MRI shows dilatation of the stomach and the portion of the duodenum proximal to the obstruction as hyperintense structures in T2-weighted sequences (Fig. 9). When obstruction is due to malrotation with Ladd’s band or volvulus, the loops of the small intestine can be seen lying mostly on the right side of the abdomen while the colon is on the left (Fig. 9); the colon is best visualized on T1-weighted sequences. The stomach and duodenum may be normal sized or even small when the fetus also has esophageal atresia. Polyhydramnios is almost always present.Fig. 9


Fetal MR in the evaluation of pulmonary and digestive system pathology.

Martin C, Darnell A, Escofet C, Duran C, Pérez V - Insights Imaging (2012)

Duodenal stenosis due to Ladd’s band. Fetus at 32 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image: the duodenum is greatly dilated until the third portion (short arrow); the stomach seems normal; there may be gastroesophageal reflux. The volume of amniotic fluid is normal. The large bowel is in the left abdomen (long arrows). b X-rays after birth showing marked dilatation of the duodenum. At surgery, intestinal malrotation and Ladd’s band causing duodenal occlusion were found, as well as Meckel’s diverticulum, which was undetected at US and MR
© Copyright Policy
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC3369121&req=5

Fig9: Duodenal stenosis due to Ladd’s band. Fetus at 32 weeks’ gestation. a Fetal coronal single-shot fast spin-echo MR image: the duodenum is greatly dilated until the third portion (short arrow); the stomach seems normal; there may be gastroesophageal reflux. The volume of amniotic fluid is normal. The large bowel is in the left abdomen (long arrows). b X-rays after birth showing marked dilatation of the duodenum. At surgery, intestinal malrotation and Ladd’s band causing duodenal occlusion were found, as well as Meckel’s diverticulum, which was undetected at US and MR
Mentions: In cases of duodenal atresia or marked duodenal obstruction, MRI shows dilatation of the stomach and the portion of the duodenum proximal to the obstruction as hyperintense structures in T2-weighted sequences (Fig. 9). When obstruction is due to malrotation with Ladd’s band or volvulus, the loops of the small intestine can be seen lying mostly on the right side of the abdomen while the colon is on the left (Fig. 9); the colon is best visualized on T1-weighted sequences. The stomach and duodenum may be normal sized or even small when the fetus also has esophageal atresia. Polyhydramnios is almost always present.Fig. 9

Bottom Line: Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common.As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study. • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

View Article: PubMed Central - PubMed

Affiliation: Radiology Department, UDIAT CD, Institut Universitari Parc Taulí-UAB, Sabadell, Spain.

ABSTRACT

Background: Prenatal awareness of an anomaly ensures better management of the pregnant patient, enables medical teams and parents to prepare for the delivery, and is very useful for making decisions about postnatal treatment. Congenital malformations of the thorax, abdomen, and gastrointestinal tract are common. As various organs can be affected, accurate location and morphological characterization are important for accurate diagnosis.

Methods: Magnetic resonance imaging (MRI) enables excellent discrimination among tissues, making it a useful adjunct to ultrasonography (US) in the study of fetal morphology and pathology.

Results: MRI is most useful when US has detected or suspected anomalies, and more anomalies are detected when MRI and US findings are assessed together.

Conclusion: We describe the normal appearance of fetal thoracic, abdominal, and gastrointestinal structures on MRI, and we discuss the most common anomalies involving these structures and the role of MRI in their study.

Teaching points: • To learn about the normal anatomy of the fetal chest, abdomen, and GI tract on MRI. • To recognize the MR appearance of congenital anomalies of the lungs and the digestive system. • To understand the value of MRI when compared to US in assessing fetal anomalies.

No MeSH data available.


Related in: MedlinePlus