Olivary hypertrophy without palatal myoclonus associated with a metastatic lesion to the pontine tegmentum.

A 46-year-old man had metastasis to the central tegmental tract of the pons with ipsilateral olivary hypertrophy. Although the phenomenon of palatal myochlonus has been repeatedly correlated with the finding of olivary hypertrophy, no palatal myoclonus was noted on repeated examinations. The clinical pathologic correlates and literature of similar cases are reviewed.