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Arch Hellen Med, 32(5), September-October 2015, 645-649


A 55-year-old man with asymptomatic hyponatremia

K. Kitsios,1 Ι. Charitidis,1 A. Harsoula,2 Ι. Neagu,1 V. Mistridou,1 P. Kountis,1 N. Mertzanidou,1 T. Abdel-Malik1
1Department of Internal Medicine, "G. Gennimatas" General Hospital, Thessaloniki,
2Department of Radiology, "G. Gennimatas" General Hospital, Thessaloniki, Greece

Hyponatremia is an electrolyte abnormality commonly encountered in clinical practice. It is rarely the major or the only clinical manifestation of a serious underlying disease, however. The case is presented of an otherwise asymptomatic man with severe hyponatremia attributed to the syndrome of inappropriate antidiuretic hormone secretion due to small-cell lung carcinoma.

Key words: Arginine-vasopressin, Hyponatremia, Paraneoplastic syndrome, Small-cell lung crcinoma, Syndrome of inappropriate antidiuretic hormone secretion.

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