关键词: 分泌ACTH的脑垂体腺瘤, 低钾血症, 醛固酮增多症

Abstract: The paper retrospectively analyzes the clinical diagnosis and treatment process of one patient of pituitary adrenocorticotrophic hormone（ACTH） adenoma with severe low blood potassium as initial symptom.The patient is misdiagnosed for two years due to ignorance of his signs;the patient after admission was given suppression test of small-dose and large-dose dexamethasone,pituitary MRI enhancement scan test and was finally diagnosed with Cushing’s disease;after transsphenoidal pituitary micro-adenomas surgery,patients’ hypertension,blood potassium,blood glucose,cortisol and ACTH were reexamined and all were in the reference range.Besides considering as primary aldosteronism,clinician should also taking Cushing’s disease,into consideration when encounter hypertension patients combined with severe low blood potassium.

Key words: ACTH-secreting pituitary adenoma, Hypokalemia, Hyperaldosteronism