[Primary hyperparathyroidism due to an intrathoracic parathyroid adenoma. - A case report and review of the literature].

A 72 year old gentleman presented to the emergency department with symptoms of diffuse joint and muscular pain, fatigue and diminished memory. Serum calcium and parathyroid hormone levels were raised, consistent with primary hyperparathyroidism. No abnormality was found on an ultrasound scan of the neck.

Management of resistant prolactinomas.

Resistance to dopamine agonists occurs in a subset of patients with prolactin-secreting pituitary tumors. The resistance is mediated by loss of pituitary D2 receptors and occurs in both microadenomas and macroadenomas. Cabergoline is the most effective dopamine agonist and tumors that do not respond to bromocriptine or quinagolide frequently respond to cabergoline.