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Graves' disease was found in a 41-year-old, married male patient with Klinefelter's syndrome. The patient began having finger tremor 5 years previously, and developed palpitation and weight loss 3 months prior to examination. He had a diffuse goiter, exophthalmos, and atrial fibrillation. Plasma levels of T3, T4 and free T4 were 2.8 ng/ml, 16.6 micrograms/dl and 4.5 ng/dl respectively. [123I] uptake was 53%, and TSH receptor antibody was 75%. Although he had no gynecomastia, his general physical appearance was that of typical eunuchoism. Chromosome studies showed a karyotype of 47,XXY. A diagnosis of Graves' disease associated with Klinefelter's syndrome was made.

We report a case of a 14 year-old girl with Wegener's granulomatosis (WG) complicated by its direct brain invasion and insulin dependent diabetes mellitus (IDDM). This case was diagnosed as WG early in its onset and successfully treated. As for IDDM of this case, the presence of HLA-DR4 and the islet cell surface antibody (ICSA) was demonstrated. To our knowledge, this is the first case report on IDDM associated with WG. We consider that WG may precipitate the development of IDDM in a genetically predisposed subject.

Association of the syndrome of inappropriate secretion of antidiuretic hormone (SIADH) with multiple sclerosis (MG) is very rare, although many other disorder of the nervous system have been reported to be associated with this syndrome; there is only one case report in the literature. We describe here a patient with the syndrome associated with MS. A 62-year-old women had a variety of neurologic symptoms, where clinical course was typical of MS. Transient episodes of hyponatremia and disturbance of consciousness occurred repeatedly with deterioration of MS. The concentration of antidiuretic hormone (ADH) was high whereas the plasma osmolality was low in the presence of concentrated urine, during the episodes of hyponatremia. Urinary Na excretions exceeded 20 mEq/day. Computed tomography and magnetic resonance imaging revealed lesions in the brain, especially in the periventricular region. The hypothalamus and pituitary appeared normal by these imaging methods. Since the periventricular region surrounds and may be functionally connected to the hypothalamus which plays the central role in the regulation of ADH secretion, it was concluded that association of SIADH and MS in this patient was not coincidental, and that demyelinating processes in the periventricular region exerted an abnormal influence on ADH secretion resulting in SIADH. Contribution of other mechanisms as increased intrathoracic pressure, however, could not be excluded completely.