Right Adrenocortical Carcinoma Coexisting With Left Adrenal Sarcomatoid Carcinoma on FDG PET/CT.

Bilateral adrenal glands synchronously involved by different types of pathologies are uncommon. An 80-year-old man underwent FDG PET/CT to evaluate bilateral adrenal masses, which were initially discovered by ultrasonography and confirmed by MRI. The images demonstrated elevated FDG activity in both lesions, which were subsequently diagnosed as concurrent right adrenocortical carcinoma and left adrenal sarcomatoid carcinoma respectively by histopathological examination.