Repeated USMLE Questions Step 1- 215

A 6 year-old girl is brought to her pediatrician by her mother. She said that her daughter is frequently bumping into chairs while walking or playing. On examination, she is found to have bitemporal hemianopia. CT scan shows calcification in the pituitary fossa.

What is the most likely diagnosis of this girl?

A-Choriocarcinoma

B-Craniophyrngioma

C-Gangliocytoma

D-Germinoma

E-Teratoma

Answer





Craniopharyngioma is the most common tumor in children. It is derived from remnants of Rathke's pouch. Due to its large size, it is impinging on the optic chiasm causing bitemporal hemianopia. Other tumors are very rare tumors.

The correct answer is B