title: A patient with polyuria and hyponatremia.
mesh_terms: D000368:Aged; D006801:Humans; D007010:Hyponatremia / Q000473:pathology*; D007018:Hypopituitarism / Q000473:pathology; D007029:Hypothalamic Neoplasms / Q000556:secondary*; D007671:Kidney Concentrating Ability; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D010911:Pituitary Neoplasms / Q000556:secondary*; D011141:Polyuria / Q000473:pathology*; D014667:Vasopressins / Q000172:deficiency
chemical_list: D014667:Vasopressins