A 6-year-old child is brought to the clinic because of frequ…
A 6-year-old child is brought to the clinic because of frequent falls, poor balance, and unsteady walking. The parents report that the child leans to one side when sitting, and has difficulty maintaining balance while standing or walking, especially in low-light conditions. Neurologic exam reveals normal muscle strength and tone, no limb ataxia, and normal reflexes. MRI shows a mass compressing the inferior portion of the cerebellum near the fourth ventricle. Which of the following cerebellar regions is most likely affected? (Hint: What structural region is located at the inferior portion of the cerebellum near the fourth ventricle. What functional part of the cerebellum produces this child’s outcomes? What plays a key role in equilibrium? What is the structural region associated with this?)