Fig. 15.1
Three-dimensional ultrasound at 16 weeks 5 days of gestation in the axial plane (a) and surface rendering mode (b) demonstrating an exophytic midline lesion originating from the brain and protruding through the nasal cavity
![A323501_1_En_15_Fig2_HTML.jpg](https://radiologykey.com/wp-content/uploads/2017/09/A323501_1_En_15_Fig2_HTML.jpg)
Fig. 15.2
Three-dimensional (3D) ultrasound in the coronal plane using “skeleton” mode: a midline fronto-ethmoid bony defect was clearly detected and rendered
![A323501_1_En_15_Fig3_HTML.jpg](https://radiologykey.com/wp-content/uploads/2017/09/A323501_1_En_15_Fig3_HTML.jpg)
Fig. 15.3
Three-dimensional ultrasound using tomographic ultrasound imaging (TUI) in the coronal plane with slice thickness of 1 mm: a hyperechogenic tumor with undefined contour is seen projecting anteriorly through the nasal cavity. Severe hypertelorism was an associated finding
![A323501_1_En_15_Fig4_HTML.jpg](https://radiologykey.com/wp-content/uploads/2017/09/A323501_1_En_15_Fig4_HTML.jpg)
Fig. 15.4
(a, b). Fetal T2-weighted MRI at 19 weeks 5 days of gestation showed the homogeneous hyperintense lesion with corresponding heterogeneous hyperintense signal on T2-weighted images
![A323501_1_En_15_Fig5_HTML.jpg](https://radiologykey.com/wp-content/uploads/2017/09/A323501_1_En_15_Fig5_HTML.jpg)
Fig. 15.5
(a) Postmortem CT scan with (b) 3D rendering confirming the prenatal US findings of fronto-ethmoid bony defect
![A323501_1_En_15_Fig6_HTML.jpg](https://radiologykey.com/wp-content/uploads/2017/09/A323501_1_En_15_Fig6_HTML.jpg)
Fig. 15.6
(a) Postmortem CT scan with 3D rendering and (b) gross pathology
![A323501_1_En_15_Fig7_HTML.jpg](https://radiologykey.com/wp-content/uploads/2017/09/A323501_1_En_15_Fig7_HTML.jpg)
Fig. 15.7
![](https://freepngimg.com/download/social_media/63059-media-icons-telegram-twitter-blog-computer-social.png)
Neuropathology confirmed the presence of neural tissue within the tumor (arrow)
![](https://freepngimg.com/download/social_media/63059-media-icons-telegram-twitter-blog-computer-social.png)
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