<prompt> Ectopic ACTH production is seen in -Small cell carcinoma is lungAnaplastic carcinoma of lungSquamous cell carcinoma of lungAdenocarcinoma of cerebellum  <response>: Ans. is a i.e, Small cell carcinoma of lung Ectopic ACTH is produced byo Small cell carcinoma of lung most commono Carcinoid tumorso Medullary Carcinoma of thyroido Islet cell tumors of pancrease 