Endocrine Abstracts

Hyperthyroidism associated to hyperthyrotropinemia is a rare condition which can be due to two different causes: resistance to thyroid hormones and TSH secreting adenoma. The differential diagnosis is not easy.We have observed 8 patients with hyperthyroidism associated to inappropriately elevated TSH. All patients had similar basal levels of thyroid hormones and 7 out of 8 had a multinodular goiter.Four out of 8 patients showed lac...

The coexistence of pheochromocytoma and hyperreninemia secondary to renal artery stenosis, which both represent important causes of juvenile hypertension, has been reported in Literature, while association between pheochromocytoma and reninoma has never been described.We evaluated a 24-year-old boy, which came to our attention for severe hypertension, unresponsive to anti-hypertensive polytherapy. In 1996, because of elevated calcitonin levels (180 pg/ml...

Hirsutism affects 5–10% of women of reproductive age and may be the initial sign of an androgen disorder. We describe two cases of occult Sertoli-Leydig ovarian cell tumor suspected only on the basis of clinical and laboratory features.The first patient, a 42 year-old woman came to our attention for hirsutism. Several blood samples showed a very high testosterone concentration (~4 ng/ml), while non-ovarian causes of hyperandrogenism were excluded. A...

Aim: We compared effectiveness of partial withdrawal of levothyroxine (L-T4) to the use of recombinant human TSH (rhTSH) in preparation for Tg testing. We also evaluated clinical aspects and quality-of-life (QOL) during both regimens.Materials and methods: Ten consecutive patients, previously treated with total thyroidectomy and radioiodine ablation for DTC, underwent rhTSH protocol and, after 15 days, reduced their L-T4 dose by 50% for 5 weeks. At the f...