GH1 and adenoma: Thirty-seven patients (n = 37/94, 39.4%) presented with FPAs; 24 (n = 24/37, 65%) with GH-secreting adenomas; 10 patients presented with ACTH-secreting adenomas (n = 10/37, 27%) and 3 (n = 3/37, 8%) with prolactinomas.