Hypertrophic olivary degeneration is a trans-synaptic neuronal degeneration associated
with hypertrophy of the inferior olivary nucleus due to a lesion in the triangle of
Guillain-Mollaret. Familiarity with this entity on magnetic resonance imaging (MRI)
is essential to avoid other erroneous ominous diagnoses. We present a case of bilateral
hypertrophic olivary degeneration and discuss the etiopathogenesis and MRI findings
in this entity. The contributory role of MR tractography in the diagnosis is also
highlighted.
Keywords
Hypertrophic olivary degeneration - magnetic resonance imaging - tractography