Selective uptake of 75Se-selenomethionine by thymoma with pre red cell aplasia.
Red cell aplasia and an enlarging anterior mediastinal mass developed in a patient being followed for thyroid carcinoma. Differential diagnosis included thymoma and metastatic thyroid carcinoma. Preoperative scanning demonstrated significant uptake of 75Se-selenomethionine whereas 67Ga-galiium citrate failed to visualize the mass. Subsequent thoracotomy revealed a lymphocytic thymoma which was resected, resulting in reversal of the red cell aplasia. The use of 75Se-selenomethionine scanning maybe a useful adjunct in the preoperative evaluation of suspected thymomas.
D000230:Adenocarcinoma / Q000150:complications; D000741:Anemia, Aplastic / Q000150:complications / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005710:Gallium Radioisotopes; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000000981:diagnostic imaging; D009378:Neoplasms, Multiple Primary / Q000150:complications; D011877:Radionuclide Imaging; D012643:Selenium; D012645:Selenomethionine; D013945:Thymoma / Q000150:complications / Q000000981:diagnostic imaging*; D013953:Thymus Neoplasms / Q000150:complications; D013964:Thyroid Neoplasms / Q000150:complications / Q000000981:diagnostic imaging
D005710:Gallium Radioisotopes; D012645:Selenomethionine; D012643:Selenium