Could primary hyperparathyroidism-related hypercalcemia induce hypercalcitoninemia?

Aims: To determine if primary hyperparathyroidism (pHPT) per se may be responsible of hypercalcitoninemia. pHPT induces chronic hypercalcemia that should be expected to be a potential stimulatory pathway of calcitonin (CT) secretion and to cause hypercalcitoninemia.

Method: We studied relationships between CT and pHPT-related chronic hypercalcemia in 122 patients aged 25-83 years who underwent parathyroid surgery.

[L-thyroxine pseudomalabsorption: a factitious disease].

Introduction: Thyroxine supplementation of patients with hypothyroidism is usually simple. A few patients, however, continue to present elevated TSH levels despite large doses of L-thyroxine.

Case: We report the case of a 71-year-old women who had had a thyroidectomy 10 years earlier and had since been hospitalized repeatedly for profound hypothyroidism.