Answer of March 2000

Clinical History:

F/43 with surgical excision of her right pontine cavernous hemangioma. 6 months later she complaint of dysarthria. Examination showed tremor of soft palate.

Figure 1 MRI (T2WI)
Figure 2 MRI (T2WI)
Figure 3 MRI (T2WI)

What is your diagnosis?

                             Figure 1                                                                    Figure 2

                            Figure 3

Diagnosis:

Hypertrophic Olivary Degeneration

Discussion:

Figure 1 postoperative changes with hemosiderin deposition in the right dorsal pons and middle cerebellar peduncle.

Figure 2 & 3 axial and coronal T2WI shows enlargement and increase signal intensity in bilateral inferior olive nuclei.