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 2016-02-06  Case of the week # 415  © Min Chen  www.TheFetus.net
Answer to the case of the week # 415
March 3, 2016 - March 17, 2016.

Min CHEN1, MD. ; Zhihua LI1, MD ; Ting SONG2, MD.

1 Department of Fetal Medicine and Prenatal Diagnosis, The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
2. Department of Radiology, The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina



Case report

A 42-year-old woman (G4P2) was referred to our center. Our first ultrasound examination at 34
+6 weeks revealed a large lobulated mass around the fetal neck, predominantly echogenic and solid with cystic areas and calcifications.
The amniotic fluid index was normal and n
o associated malformations were observed.

An MRI was performed to evaluate the extention of de lesion.

Based on the ultrasound and MRI findings and the location of the mass, the most likely diagnosis was fetal neck teratoma, and it was confirmed postnatally.


Image 1-7: 2D and doppler images of the fetal neck showing a large heterogenous solid lesion with cystic areas inside the mass and echogenic dots suggestive of microcalcifications. The color doppler evaluation shows b
lood flow of varying degrees within the mass.

    


Videos 1 and 2: 
2D images of the fetal neck showing a large heterogenous solid lesion with cystic areas inside the mass and echogenic dots suggestive of microcalcifications. 

 


Image 8-11: sagital in utero MRI images revealed a mass located in the anterior region of the fetal neck, from the area of the mandibule and tongue. Heterogeneous signal on T2 weighted sequences was seen, according to the ultrasound findings (solid mass with cystic component). 

  
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