Hyponatremia is relevant in cancer patients because it may have a negative impact on outcome, on quality of life and on length of hospitalization.
There are evidences that the inappropriate antidiuretic hormone syndrome (SIADH) is the most common cause of hyponatremia in cancer patients.
An early detection, monitoring and prompt management is needed to improve the patient’s outcome and several options are available.
Several studies have demonstrated the efficacy and good tolerability of Tolvaptan for the treatment of SIADH-related hyponatremia even in cancer patients.