Role of Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Various Orbital Malignancies

Aravintho Natarajan, Piyush Chandra, Nilendu Purandare, Archi Agrawal, Sneha Shah, Ameya Puranik, Venkatesh Rangarajan

Indian Journal of Nuclear Medicine 2018 33(2):118-124

Orbital swelling comprises wide spectrum of pseudotumors, benign and malignant tumor. Malignant tumor may be primary or secondary tumor, and they constitute about 36% of orbital tumors in adult. Fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) scan is extensively used in hematological malignancies and in solid tumors for staging, treatment response, and restaging. Recently, the use of FDG-PET/CT in orbital malignancies has gained importance. The aim of this pictorial essay is to illustrate few important orbital malignancies detected in F-18 FDG-PET/CT and discuss its role in assessing the primary lesion and associated systemic finding.

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