Localization of Tc-99m sestamibi and TI-201 in an unsuspected calcified intrathoracic mass.
Tc-99m MIBI and TI-201 uptake have been reported in benign and malignant lesions. However, concordant uptake of both radiotracers has been described infrequently. The authors report a patient with a case history of tuberculosis and breast cancer who underwent a TI-201 cardiac stress/planar study initially for complaints of angina pectoris, and 3 years later a follow-up Tc-99m MIBI cardiac study was completed for similar complaints. These studies incidentally revealed uptake of TI-201 and Tc-99m MIBI in a large left lung mass unchanged in size between the two studies. CT with intravenous contrast performed 2 months after the Tc-99m MIBI study revealed a 9 cm calcified soft-tissue mass in the left lung with adjacent pleural calcifications.
Kandula
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Department of Nuclear Medicine, Department of Veterans Affairs, Hines, IL 60141, USA.
Shirazi
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P
D000368:Aged; D000787:Angina Pectoris / Q000000981:diagnostic imaging; D001943:Breast Neoplasms / Q000150:complications; D002114:Calcinosis / Q000000981:diagnostic imaging*; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D017256:Technetium Tc 99m Sestamibi; D013794:Thallium Radioisotopes; D015899:Tomography, Emission-Computed, Single-Photon; D014397:Tuberculosis, Pulmonary / Q000150:complications
D013794:Thallium Radioisotopes; D017256:Technetium Tc 99m Sestamibi