Discordant uptake of Tl-201 and Tc-99m MIBI in a patient with follicular adenoma.
Two phase Tl-201 and Tc-99m MIBI thyroid scintigraphies were carried out in a 30-year-old woman who had a solitary cold thyroid nodule seen on a pertechnetate scan. Although an early Tl-201 thyroid image showed intense uptake in the nodule, Tc-99m MIBI demonstrated a hypoactive lesion on the early image. Delayed thyroid scans showed faster washout from the nodule compared to normal thyroid tissue for both Tl-201 and Tc-99m MIBI. Later on, the patient was operated on and the nodule was found to be a follicular adenoma by histopathological diagnosis.
Erdil
T Y
TY
Department of Nuclear Medicine, Marmara University School of Medicine, Istanbul, Turkey. yerdil@marun.edu.tr
Turoğlu
H T
HT
D018263:Adenocarcinoma, Follicular / Q000175:diagnosis / Q000000981:diagnostic imaging; D000236:Adenoma / Q000175:diagnosis / Q000000981:diagnostic imaging*; D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi; D013794:Thallium Radioisotopes; D013964:Thyroid Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging*
D019275:Radiopharmaceuticals; D013794:Thallium Radioisotopes; D017256:Technetium Tc 99m Sestamibi