Atlantoaxial Synovial Cyst Associated with Instability in a Chihuahua
Figure 1
(a) Sagittal T2-weighted MR image showing a hyperintense cyst compressing the spinal cord. The vertical dotted lines indicate the level of the transverse images: middle image (cranial line) and right image (caudal line). (b) Transverse BASG at the level of the atlantoaxial joint demonstrating the cyst’s origin from the right side of the atlantoaxial joint. (c) Transverse BASG at the caudal aspect of C2 showing the biconvex outline and ventral bilateral location of the cyst eliciting severe compression of the spinal cord.
