Nephrogenic Diabetes Insipidus: A Rare Presentation in Multiple Myeloma

Mehdi Dehghani, Vahid Mohammad Karimi


We report a case of multiple myeloma that presented with anorexia, fatigue, high erythrocyte sedimentation rate, bone marrow plasmacytosis of more than 30%, polyuria,and low urine specific gravity. This unusual presentation was diagnosed as nephrogenic diabetes insipidus secondary to a proximal tubular dysfunction. The tubular functional disturbance appeared to be related to the presence of lambda-type light chains. The patient was treated with desmopressine without response. After one month of treatment with thalidomide and dexamethasone for myeloma there was a dramatic response with decreased urine output.

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eISSN: 2008-6687           pISSN: 2008-6709