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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

Infradiaphragmatic extralobar pulmonary sequestration. Fetus at 23 weeks’ gestation. a Fetal sagittal single-shot fast spin-echo MR image showing a well-defined hyperintense mass with hypointense septa in the left abdomen (arrow) between the diaphragm, the stomach (arrowhead), and above the kidney. Imaging studies after birth (US, CT, and MR) detected this lesion; the suprarenal gland was normal and the metaiodobenzylguandine study was negative. b Postnatal axial T1-weighted MR image showing the lesion (arrows). The child is asymptomatic, and the laboratory tests were normal. No anomalous vascular irrigation was detected; nevertheless, we believe this is a case of infradiaphragmatic extralobar pulmonary sequestration, and no surgery has been performed
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Fig7: Infradiaphragmatic extralobar pulmonary sequestration. Fetus at 23 weeks’ gestation. a Fetal sagittal single-shot fast spin-echo MR image showing a well-defined hyperintense mass with hypointense septa in the left abdomen (arrow) between the diaphragm, the stomach (arrowhead), and above the kidney. Imaging studies after birth (US, CT, and MR) detected this lesion; the suprarenal gland was normal and the metaiodobenzylguandine study was negative. b Postnatal axial T1-weighted MR image showing the lesion (arrows). The child is asymptomatic, and the laboratory tests were normal. No anomalous vascular irrigation was detected; nevertheless, we believe this is a case of infradiaphragmatic extralobar pulmonary sequestration, and no surgery has been performed

Mentions: On T2-weighted images they are seen as well-defined hyperintense masses with or without hypointense septa [11] (Figs. 6 and 7). Intralobar sequestration may be difficult to differentiate from CCAM, because the systemic feeding vessel is often difficult to detect.Fig. 6


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

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

Infradiaphragmatic extralobar pulmonary sequestration. Fetus at 23 weeks’ gestation. a Fetal sagittal single-shot fast spin-echo MR image showing a well-defined hyperintense mass with hypointense septa in the left abdomen (arrow) between the diaphragm, the stomach (arrowhead), and above the kidney. Imaging studies after birth (US, CT, and MR) detected this lesion; the suprarenal gland was normal and the metaiodobenzylguandine study was negative. b Postnatal axial T1-weighted MR image showing the lesion (arrows). The child is asymptomatic, and the laboratory tests were normal. No anomalous vascular irrigation was detected; nevertheless, we believe this is a case of infradiaphragmatic extralobar pulmonary sequestration, and no surgery has been performed
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Related In: Results  -  Collection

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getmorefigures.php?uid=PMC3369121&req=5

Fig7: Infradiaphragmatic extralobar pulmonary sequestration. Fetus at 23 weeks’ gestation. a Fetal sagittal single-shot fast spin-echo MR image showing a well-defined hyperintense mass with hypointense septa in the left abdomen (arrow) between the diaphragm, the stomach (arrowhead), and above the kidney. Imaging studies after birth (US, CT, and MR) detected this lesion; the suprarenal gland was normal and the metaiodobenzylguandine study was negative. b Postnatal axial T1-weighted MR image showing the lesion (arrows). The child is asymptomatic, and the laboratory tests were normal. No anomalous vascular irrigation was detected; nevertheless, we believe this is a case of infradiaphragmatic extralobar pulmonary sequestration, and no surgery has been performed
Mentions: On T2-weighted images they are seen as well-defined hyperintense masses with or without hypointense septa [11] (Figs. 6 and 7). Intralobar sequestration may be difficult to differentiate from CCAM, because the systemic feeding vessel is often difficult to detect.Fig. 6

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