[A 21-year old patient with hypernatraemia after intracranial tumour surgery--a case report].

The article concerns case of 21-year old patient after intracranial tumour surgery, who was admitted to the internal diseases department due to hypernatraemia. On the basis of the whole clinical status the patient was diagnosed with diabetes insipidus and disturbance of sensation of thirst which may in turn cause hypernatraemia. There were conducted physical examinations as well as some additional tests which allowed the diagnosis of combined pituitary hormone deficiency. In this situation the disorders of sodium level was rebalanced and hormonal substitution in terms of antidiuretic hormone, adrenocortical hormone, thyroid hormone and testosterone was started.