Isolated cranial nerve palsy is an uncommon sequel in head injury. A 9-year-old child
was admitted in comatose condition after falling from a house with right pupil dilatation
and same eyeball deviated laterally. Clinical impression was that of a right sided
traumatic hematoma and resulting uncal herniation leading to third nerve palsy. However,
CT scan revealed a small hemorrhage in anterior tegmentum on right side. The majority
of third nerve palsies following trauma have been reported due to lateral herniation
syndrome but isolated third nerve palsy due to tegmental herniation is rare entity.
Keywords
tegmentum - hematoma - third nerve