Hyponatremia with pituitary tumor---One case of syndrome of inappropriate antidiuretic hormone secretion / 中华内分泌代谢杂志

ABSTRACT

A 57-year-old female patient was admitted to our hospital because of sustained hyponatremia within stress dose of hydrocortisone replacement after transsphenoidal partial pituitary tumor surgery. Multiple clinical parameters investigation for 2 weeks was shown increasing serum Na+and uric acid level and decreasing blood pressure level under water restriction about 500 ml/d, and even without hydrocortisone replacement, the serum Na+ still maintain normal level. After surgeries and radiotherapy, the tumor was undetectable and serum Na+ level was within the normal range without any water restriction.