Abstract
The pituitary gonadotropic adenoma is an adenoma developed́ in the gonadotropic cells of the anterior pituitary. It can be secreting releasing in excess in blood and urine; the products of its secretion are gonadostimulines (F.S.H. and L.H.) or non-secreting in this case only histo- cytochemical analysis will be able to allow identification. We report two cases of macroadenoma with LH-FSH immunostaining. Pituitary magnetic resonance imaging revealed a macroadenoma. Transphenoidal surgery was incomplete. Immunohistochemical staining showed that the tumor cells were reactive to LH (70%) and FSH (30%). Control pituitary imaging revealed a residual macroadenoma and deficit replacement was started. Hormonal testing for all patients with pituitary adenoma should be performed even in the absence of symptoms of hypersecretion. The treatment of gonadotropic adenomas is surgical. Complementary radiotherapy is usually indicated in case of postoperative tumor remnants with an effect on the prevention of recurrence. Medical treatment (dopaminergic agonists, somatostatin analogues, GnRH agonists and antagonists) is disappointing.
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