Hyponatremia due to hypothyroidism: a pure renal mechanism.

Hyponatremia is a common disorder. When hyponatremia is the result of hypothyroidism it can be successfully treated with thyroid hormone substitution. We followed cumulative sodium- and fluid balances of a patient with hyponatremia, resulting from hypothyroidism. We concluded that hyponatremia in hypothyroidism is due to a pure renal mechanism, and cannot be ascribed to inappropriate secretion of antidiuretic hormone.

[Deep venous thrombosis of the right leg caused by compression by an abdominal aortic aneurysm]. / Diepe veneuze trombose van het rechter been ten gevolge van compressie door een aneurysma aortae abdominalis.

A 67-year-old man was admitted because of suspected deep venous thrombosis of the right leg. At sonography, CT of the abdomen and aortography it became obvious that compression of the right iliac vein by an abdominal aortic aneurysm was responsible for the deep venous thrombosis. This has only been reported before twice. In the case of deep venous thrombosis or oedema of the legs an abdominal aortic aneurysm needs to be excluded.