An infarct involving the middle cerebellar peduncle is likely to be secondary to occlusion in the territory of the :
a) the Posterior Cerebral Artery
b) the Basilar Artery
c) The superior cerebellar artery
d) The anterior inferior cerebellar artery
e) The posterior inferior cerebellar artery
Answer:
d) The anterior inferior cerebellar artery
Explanation
The AICA territory includes the middle cerebellar peduncle, fifth nerve sensory nucleus and tract, seventh nerve and nucleus, eighth nerve, vestibular nuclei and the descending sympathetic tracts. AICA-related lateral Pontine infarction produces a syndrome similar to Wallenberg's; but instead of hoarseness, palatal weakness and loss of taste, there is ipsilateral facial paralysis and deafness.