[Infrequent clinical manifestations in a patient with eosinophilic granuloma].

We report the case of a 54 year old male with diabetes insipidus and diabetes mellitus who developed, twenty years later, signs of hypogonadotropic hypogonadism, secondary adrenal insufficiency and primary hypothyroidism with positive serum antithyroglobulin antibodies. At that time, an osteolytic lesion on the left temporal bone was localized by radiologic studies. A bone biopsy confirmed the diagnosis of eosinophilic granuloma.

Nocturnal high-dose dexamethasone suppression test in the aetiological diagnosis of Cushing's syndrome.

Seventeen patients with well-proven Cushing's syndrome (13 with Cushing's disease, 3 with adrenal tumour and 1 presenting ectopic ACTH syndrome caused by bronchial carcinoid) were investigated by using a single-dose 8 mg dexamethasone nocturnal test. The results obtained were compared with those of the classical 8 mg Liddle's test, metyrapone stimulation, plasma ACTH concentration and with the final diagnosis reached through surgery, pathologic anatomy, and/or clinical and biochemical follow-up of the patients after treatment. The diagnostic efficacy or the predictive power of the test (defined as the ratio between the number of cases in which the diagnosis was correctly predicted and the total number of cases), was at least 82.