Syndrome of inappropriate antidiuretic hormone secretion (SIADH) is an important electrolyte abnormality that can occur following allogeneic stem cell transplantation. We herein report the case of a 20-year-old man who developed SIADH three weeks after undergoing cord blood transplantation. Tacrolimus administration was suspected to be a cause of the disorder. In addition to restricting water i...

Timely diagnosis of hyponatremia is important for preventing potential morbidity and mortality as it is often an indicator of underlying disease. The most common cause of eurvolemic hyponatremia is the syndrome of inappropriate antidiuretic hormone (SIADH) secretion. Recent studies have demonstrated that proinflammatory cytokines such as interleukin (IL) 1β and IL-6 are involved in the developm...

Olfactory neuroblastoma (ONB) is an uncommon neuroendocrine sinonasal cancer associated by many authors to ectopic production of several biologically active substances. We report a case of a 31-year-old male patient who presented with idiopathic syndrome of inappropriate secretion of antidiuretic hormone (SIADH). During diagnostic work-up, a CT scan of the head was performed and an ethmoidal ON...

Hyponatremia (sodium levels of <135 mEq/L) is one of the most common electrolyte imbalances in clinical practice, especially in patients with neurologic diseases. Hyponatremia can cause cerebral edema and brain herniation; therefore, prompt diagnosis and proper treatment is important in preventing morbidity and mortality. Among various causes of hyponatremia, diagnosing syndrome of inappropriat...

Water intoxication is a life-threatening disorder accompanied by brain function impairment due to severe dilutional hyponatremia. We treated a 22-year-old man without psychotic illness who had been put in a detention facility. He drank 6 liters of water over a 3-hour period at the facility as a game's penalty, and he showed progressive psychiatric and neurological signs including restlessness, ...

There is no established chemotherapy regimen in metastatic primary urethral cancer (mPUC). The efficacy of a cisplatin (CDDP)-based regimen has been reported, however, when the syndrome of inappropriate secretion of antidiuretic hormone (SIADH) occurs, the chemotherapy regimen should be changed to another platinum compound. In this report, we describe a 66-year-old woman who was diagnosed as mP...

The syndrome of inappropriate antidiuretic hormone (SIADH) secretion is a well recognised paraneoplastic phenomenon and the vast majority are associated with small cell lung carcinoma. Rarely however, the non-small cell variety can sometimes be responsible and this report describes such an occurrence. Uniquely in this case, after chemotherapy the paraneoplastic SIADH improved in parallel with a...