title: Preoperative thyroid scanning in children with neck masses.
mesh_terms: D002648:Child; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D007457:Iodine Radioisotopes; D011300:Preoperative Care; D011877:Radionuclide Imaging; D013667:Technetium; D013961:Thyroid Gland; D013964:Thyroid Neoplasms / Q000175:diagnosis
chemical_list: D007457:Iodine Radioisotopes; D013667:Technetium