Abstract
In cancer patients, syndrome of inappropriate antidiuretic hormone secretion (SIADH) is the leading cause of hyponatremia. 1 Hyponatremia is a serious disorder of dyselectrolytemia, linked with neurological symptoms that are life-threatening and it is the most common aetiology of tumour-related electrolyte imbalance.2 The tumours commonly causing hyponatremia of SIADH variety are lung, head-neck and breast tumours. SIADH has been documented in various malignancy types with numerous possible aetiologies apart from active malignancy.2,3 The aetiology distribution of SIADH in tumour patients are not completely known. Secondly, clinically, it is not clear which malignancy is most commonly associated with SIADH.3 Calcified meningioma presenting as SIADH had not been reported so far in the literature. Here a case of an elderly female with clinical features and brain imaging suggestive of meningioma associated with hyponatremia due to SIADH had been highlighted.
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