Persistent FDG Uptake at Apical Aneurysm in a Patient With Cardiac Sarcoidosis.

We present a case of cardiac sarcoidosis with persistent, focal fluorodeoxyglucose uptake at the left ventricular apical aneurysm concerning for ongoing active inflammatory injury, prompting aggressive immunosuppressive therapy. This case highlights the importance of understanding the various clinical entities that may resemble disease activity on fluorodeoxyglucose positron emission tomography/computed tomography imaging. (Level of Difficulty: Intermediate.).