title: Steps in the diagnosis of three functioning endocrine tumors.
mesh_terms: D007516:Adenoma, Islet Cell / Q000175:diagnosis*; D001786:Blood Glucose / Q000032:analysis; D003937:Diagnosis, Differential; D005755:Gastrins / Q000032:analysis; D005951:Glucose Tolerance Test; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology; D007328:Insulin / Q000097:blood; D010190:Pancreatic Neoplasms / Q000175:diagnosis*; D010282:Parathyroid Neoplasms / Q000175:diagnosis*; D011863:Radioimmunoassay; D014044:Tolbutamide; D015043:Zollinger-Ellison Syndrome / Q000175:diagnosis*
chemical_list: D001786:Blood Glucose; D005755:Gastrins; D007328:Insulin; D014044:Tolbutamide