Lateral pontine syndrome :-
It is due to involvement of AICA( Anterior inferior cerebellar artery)
Ipsilateral manifestation include:-
- facial nerve involvement: weakness of face
- CN V : loss of pain and temperature from face
- Vestibular nerve /nucleus:- vertigo , nausea , horizontal and vertical nystagmus .
- auditory nerve or cochlear nucleus:- deafness and tinnitus.
- middle cerebellar peduncle:- ataxia .
Contralateral features:-
- spinothalamic tract involvement:- loss of pain and temperature from the body .
•Medial pontine syndrome :- it is due to involvement of paramedian branch of the basilar artery .
Ipsilateral manifestation:-
- CN VI :- diplopia .
- vestibular nucleus:- nystagmus
- middle cerebellar peduncle:- ataxia
Contralateral features:-
- Coticobulbar and Corticospinal tract involvement :- paralysis of face , arm and leg .
- Medial leminiscus:- loss of touch and proprioception from the body .