? Persistent proatlas with additional segmentation of the craniovertebral junction

Posted By Holger Spittank
? Persistent proatlas with additional segmentation of the craniovertebral junction

Background: Malsegmentation of the fourth occipital vertebra can result in various anomalies that are known as ‘manifestation of the proatlas’. The occurrence of a persistent proatlas with additional segmentation of the craniovertebral junction represents an extremely rare dysplasia. Objective: Case study description and analysis of an 8-year-old boy with manifestation of proatlas and additional cervical segmentation. Patient and methods: The complex craniovertebral dysplasia in an 8-year-old male patient was analysed retrospectively. The assessment included conventional radiography, 3D computed tomography, and magnetic resonance imaging. Results: Cervical spine radiographs demonstrated a regularly differentiated occipital base, as well as the presence of two lateral masses of the proatlas vertebra and two lateral masses of the atlas vertebra. Furthermore nonfusion of arcus dorsalis proatlantis and hypoplasia of the arcus dorsalis atlantis could be observed. Conclusions: To our knowledge, it is the second report concerning the persistence of a complete human proatlas vertebra. We consider the biomechanical and embryological particularities of this complex dysplasia to represent sufficient basis for future differentiation from other malformations of the fourth occipital vertebra. We propose the term ‘Tsuang- Goehmann malformation’ to describe this malformation characterised by an additional cervical segment above the atlas.

Gender, Age

, 0

Leave A Comment

You need to be logged in to leave comments.


Comments
  • There are no comments.