title: Scintigraphic studies in patients with medullary carcinoma of the thyroid.
abstract: Findings on pre-operative thyroid scintiscans in 29 patients with medullary carcinoma of the thyroid were compared with results of palpation and pathological findings. Six patients had a normal uptake of 131I or 99mTc in tumours 1.5--8 cm in diameter. When compared with 111 pre-operative scintiscans in other thyroid carcinomas, the frequency of normal uptake in medullary carcinomas was high, 19% versus 0--6%. Gallium-67 scintiscans were performed in nine patients. Six patients had extensive tumours, but accumulation of 67Ga appeared in only one patient.
mesh_terms: D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000000981:diagnostic imaging*; D005260:Female; D005710:Gallium Radioisotopes; D006801:Humans; D007457:Iodine Radioisotopes; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging*
chemical_list: D005710:Gallium Radioisotopes; D007457:Iodine Radioisotopes; D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m