This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders in Menstruation, Subject name: Gynaecology & Obstetrics
A 35-year-old female patient Radha having children aged 5 and 6 years has history of amenorrhea and galactorrhea. Blood examination reveals increased prolactin. CT of head is likely to reveal: 
Select and explain. 
A. Pituitary adenoma, B. Craniopharyngioma, C. Sheehan's syndrome, D. Pinealoma
A: Pituitary adenoma
Answer: A: Pituitary adenoma 
Explanation: Ans. is a, i.e. Pituitary adenomaRef: Novak 14th/ed, p1104,1109; Harrison 17th/ed, p2205-2206; Williams Gynae 1st/ed, p 338 onwards