F-18 Fluorodeoxyglocose Positron Emission Tomography/Computed Tomography in the Diagnosis of Chronic Myopathic Sarcoidosis

Muscle involvement is a frequent histopathological feature of sarcoidosis, occurring in 50% to 80% of patients, but it is rarely symptomatic, and often, underreported. Although computed tomography and magnetic resonance imaging findings of muscular sarcoidosis have been described, the fluorodeoxyglucose positron emission tomography imaging characteristics have only recently been reported in a case of localized uptake in the lower extremities. We present a case of diffuse uptake within the most common clinical variant of symptomatic muscular sarcoidosis, chronic myopathy, showing significant uptake of F-18 fluorodeoxyglocose on a positron emission tomography/computed tomography fusion examination.