title: Melatonin as a tumour marker in a patient with pineal tumour.
mesh_terms: D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000097:blood*; D006801:Humans; D008297:Male; D008550:Melatonin / Q000097:blood; D010870:Pineal Gland; D010871:Pinealoma / Q000097:blood*; D011863:Radioimmunoassay
chemical_list: D008550:Melatonin