title: New approach to the localisation of phaeochromocytoma: imaging with iodine-131-meta-iodobenzylguanidine.
abstract: Thirty eight patients with known or suspected phaeochromocytoma were studied by radioisotope imaging after intravenous administration of iodine-131-meta- iodobenzylguanidine (131I- mIBG ), a radiopharmaceutical which has affinity for chromaffin tumours. Seventeen positive results (including one false positive) and 21 negative results (including two false negatives) were obtained. Clinical accuracy was 92%. Urinary noradrenaline concentrations were raised in all patients with confirmed phaeochromocytoma. These findings show that 131I- mIBG is of value in localising and assessing the extent of chromaffin tumours.
mesh_terms: D019797:3-Iodobenzylguanidine; D000293:Adolescent; D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging* / Q000652:urine; D000328:Adult; D000368:Aged; D004298:Dopamine / Q000652:urine; D004837:Epinephrine / Q000652:urine; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D008297:Male; D008875:Middle Aged; D009638:Norepinephrine / Q000652:urine; D010673:Pheochromocytoma / Q000000981:diagnostic imaging* / Q000556:secondary / Q000652:urine; D011877:Radionuclide Imaging; D014018:Tissue Distribution
chemical_list: D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D019797:3-Iodobenzylguanidine; D004298:Dopamine; D009638:Norepinephrine; D004837:Epinephrine