Abstract
Central diabetes insipidus (DI) is a disease caused by insufficient release of antidiuretic hormone. Central DI with lung cancer is very rare. Most of them are caused by the pituitary metastasis, and rarely, by the paraneoplastic syndromes. Central DI is diagnosed by the water deprivation test. The treatment consists of surgical resection, radiotherapy and administration of desmopressin.
We report an unusual case of central DI with non-small cell lung cancer. The diagnosis was confirmed by water deprivation test. After the administration of desmopressin, the urine osmolarity was increased. The patient's symptoms and urine osmolarity were improved by intranasal desmopressin.