title: Suppression of plasma prolactin in a patient with a pinealocytoma.
abstract: Plasma growth hormone (HGH), prolactin (PRL), luteinizing hormone (LH), thyroid stimulating hormone (TSH), cortisol and melatonin were determined during a 24 h period in a pubertal boy with a pinealocytoma. All hormone concentrations were normal with respect to age and time of day, with the exception of PRL which was undetectable. After subtotal removal of the tumor, basal PRL was still undetectable, but could be stimulated moderately by insulin-induced hypoglycaemia or TRH.
mesh_terms: D000293:Adolescent; D001932:Brain Neoplasms / Q000097:blood*; D002940:Circadian Rhythm; D013006:Growth Hormone / Q000097:blood; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007030:Hypothalamo-Hypophyseal System / Q000503:physiopathology; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D008550:Melatonin / Q000097:blood; D010871:Pinealoma / Q000097:blood*; D011388:Prolactin / Q000097:blood*; D013972:Thyrotropin / Q000097:blood
chemical_list: D011388:Prolactin; D007986:Luteinizing Hormone; D013972:Thyrotropin; D013006:Growth Hormone; D008550:Melatonin; D006854:Hydrocortisone