Pons - nerves patho

Question 1

12 Boy - worsening headache for past several months

paresthesia + weakness + stiffness of the extremities

MRI - expansile mass in the lower pons - UW figure
which nerve involvement?
& what feature ?

Answer 1

Pontine glioma - mass compressing inferior pons

Question 2

major nerve and nuclei of pons ?

Answer 2

CN V - trigeminal - muscle of mastication + face + jaw

CN VI - abducens - lateral rectus

CN VII - facial - muscles of facial expressions

CN VIII - vestibulocochlear
V - hearing
C - head position + movement

Question 3

lowest point of pons - which nerve there ?

Answer 3

CN VIII - vestibular nucleus -

Question 4

Pontine glioma features ?

Answer 4

nystagmus - due to impairment of the VC reflex

Question 5

CN VIII which reflex ?

Answer 5

vestibular part - vestibulocochlear refelx - VOR