A 15-year-old male is admitted to the emergency department with severe headache and hydrocephalus. Radiographic examination reveals a craniopharyngioma occupying the sella turcica, primarily involving the suprasellar space. Which of the following is the most likely cause of this tumor?
Persistence of a small portion of the Rathke pouch Abnormal development of pars tuberalis Abnormal development of foramina of Monro Abnormal development of the alar plates that form the lateral wall of diencephalon