<prompt> A patient with cushinoid features presents with hemoptysis; he shows no response to dexamethasone suppression test; most likely diagnosis here is:Adrenal hyperplasiaAdrenal adenomaCa lung with ectopic ACTH productionPituitary microadenoma  <response>: Answer is C Ca lung with ectopic ACTH production; Lack of suppression to dexamethasone challenge ACTH producing tumor and presence of hemoptysis Carcinoma lung in a patient with Cushinoid features suggests a diagnosis of Carcinoma lung with ectopic ACTH secretion. As a method of diagnostic workup of any patient with suspected Cushings we screen the patient with plasma coisol levels at 8:00 a.m. in the morning. Those with increased coisol levels are subjected to a dexamethasone supression test. In the given question there is lack of suppression to dexamethasone challenge so option d is out. Out of the choices remaining the presence of hemoptysis points towards the diagnosis of carcinoma lung with ectopic ACTH. 