LUNG-TUMOR METASTASIS TO BREAST DETECTED BY FLUORINE-18-FLUORODEOXYGLUCOSE PET

We report a case of breast metastasis from a large-cell bronchogenic a denocarcinoma. Serial F-18-fluorodeoxyglucose (FDG) positron emission tomography (PET) was used to monitor the response of the primary lesio n to radiation therapy. In the 7-wk interval between studies, an area of markedly increased FDG uptake appeared in the right breast. On subs equent biopsy this proved to be a metastatic deposit from the primary lesion. breast metastasis is uncommon. The ability of FDG-PET to detec t metastatic lesions from primary lung tumor is variable. In this case , the finding of the new breast lesion resulted in introduction of che motherapy to the treatment program.