Innocent PET avidity in patient with metastatic melanoma

Description

A 53-year-old man presented for a surveillance ¹⁸F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT following recent resection of a melanoma of his right leg and metastasis to his right inguinal region. The scan was acquired approximately 60 min after intravenous injection of FDG. The FDG-PET/CT scan demonstrated no FDG uptake in the right inguinal region. However, intense FDG uptake was observed in skeletal muscles, specifically in the left foot (figure 1A) and around the shoulder, bicep and pectoral regions bilaterally (figure 1B,C).

Figure 1

¹⁸F-fluorodeoxyglucose positron emission tomography showed intense uptake within the left foot (A) and around the shoulder (B), bicep and pectoral regions bilaterally (C).

FDG-PET/CT is an integral part of modern-day practice in oncology imaging and has been shown to have high sensitivity and specificity for the detection of melanoma metastasis.1 Concerned by the...

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