Answer of July 2000

Clinical History:

M/5months. Abnormal thoracic spine on plain film.

Figure 1 (CXR)
Figure 2 (T2WI)
Figure 3 (T2WI)
Figure 4 (T2WI)

What is your diagnosis?

                           Figure 1

                           Figure 2

                           Figure 3

                           Figure 4

Diagnosis:

Split Notochord Syndrome with dorsal enteric cyst

Discussion:

Figure 1 CXR shows segmentation abnormality in the mid-thoracic vertebrae.

Figure 2-4 MR shows a right posterior mediastinal mass with CSF signal. It extends through the ventral defect of the thoracic vertebrae into the spinal canal. The thoracic cord is displaced to the right.