期刊
BMJ CASE REPORTS
卷 14, 期 8, 页码 -出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/bcr-2021-244850
关键词
metabolic disorders; pituitary disorders; fluid electrolyte and acid-base disturbances
A 68-year-old female presented with refractory hypokalemic hypertension and metabolic alkalosis, raising suspicion of Cushing's syndrome (CS). Further investigation confirmed ACTH-dependent CS, with treatment resulting in significant improvement of symptoms.
A 68-year-old woman presented with right arm cellulitis, not responsive to oral antibiotics. Intravenous antibiotics were commenced, and an ultrasound scan confirmed a collection that was surgically drained. She developed refractory hypokalaemia with normal magnesium, no gastrointestinal losses and no iatrogenic cause. She was hypertensive, hyperglycaemic, alkalotic, clinically obese with proximal myopathy and skin bruising. These clinical findings and refractory hypokalaemic hypertension with metabolic alkalosis raised a suspicion of Cushing's syndrome (CS). 24-hour urinary free cortisol (24 hours) was grossly raised on two occasions. The adrenocorticotropic hormone (ACTH) was significantly raised at 154 ng/L, confirming ACTH-dependant CS. A CT scan of the thorax, abdomen and pelvis excluded an ectopic source of hypercortisolaemia. MRI pituitary revealed an invasive macroadenoma. Treatment with endoscopic debulking resulted in the resolution of hypokalaemia and metabolic alkalosis with significant improvement in hyperglycaemia and hypertension.
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