A pt with cerebral mets has polyuria and polydipsia. What part of the brain would be affected?
a. Cerebral cortex
b. Cerebellum
c. Diencephalon
d. Pons
e. Medulla
Ans. The key is C. Diencephalon. [Diencephalon is the caudal (posterior) part of the forebrain,
containing the epithalamus, thalamus, hypothalamus, and ventral thalamus and the third ventricle.
Hypothalamus produce ADH and hens lesion of diencephalon (hypothalsamus) may produce cranial
diabetes insipidus.