Question:

Which of the following radiographic features are characteristic of the congenital absence of a cervical spine pedicle?
1. A dysplastic contralateral transverse process.
2. A dysplastic ipsilateral transverse process.
3. The false appearance of an enlarged ipsilateral neural foramen.
4. A dysplastic, ventrally displaced contralateral articular pillar and lamina.
5. A dysplastic, dorsally displaced ipsilateral articular pillar and lamina.





Answer:

The correct answers for the question "Which of the following radiographic features are characteristic of the congenital absence of a cervical spine pedicle?" are:

2. A dysplastic ipsilateral transverse process.

3. The false appearance of an enlarged ipsilateral neural foramen.

5. A dysplastic, dorsally displaced ipsilateral articular pillar and lamina.



Explanation

1. A dysplastic ipsilateral but not contralateral transverse process is characteristic. (Wiener et al. (5) describe several characteristic radiographic features of this congenital anomaly namely: … and 3) a dysplastic ipsilateral transverse process.)

2. Yes, a dysplastic ipsilateral transverse process is characteristic. (Wiener et al. (5) describe several characteristic radiographic features of this congenital anomaly namely: … and 3) a dysplastic ipsilateral transverse process.)

3. The false appearance of an enlarged ipsilateral neural foramen is characteristic. (Wiener et al. (5) describe several characteristic radiographic features of this congenital anomaly namely: 1) the false appearance of an enlarged ipsilateral neural foramen due to the absent pedicle; …)

4. A dysplastic, dorsally but not ventrally displaced contralateral articular pillar and lamina are characteristic (Wiener et al. (5) describe several characteristic radiographic features of this congenital anomaly namely: … 2) a dysplastic, dorsally displaced ipsilateral articular pillar and lamina; …)

5. A dysplastic, dorsally displaced ipsilateral articular pillar and lamina are characteristic. (Wiener et al. (5) describe several characteristic radiographic features of this congenital anomaly namely: … 2) a dysplastic, dorsally displaced ipsilateral articular pillar and lamina; …)



From the manuscript:
The role of CT imaging in the congenital absence of a cervical spine pedicle: a case report and review of the literature
Radiology Case. 2009 May; 3(5):7-10


This article belongs to the Neuro section.




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From the manuscript

The role of CT imaging in the congenital absence of a cervical spine pedicle: a case report and review of the literature

Free full text article: The role of CT imaging in the congenital absence of a cervical spine pedicle: a case report and review of the literature

Abstract
The congenital absence of a cervical spine pedicle is a rare clinical condition which is usually picked up as an incidental finding on imaging studies performed on patients complaining of neck pain following trauma. It is important to recognize that the finding is not traumatic in origin as this has implications regarding the treatment. We report a case of congenital absence of a cervical spine pedicle and present a review of the literature.






References



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