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PURPOSE: To report a case of orbital lymphomawith systemic dissemination that was identified and localized by combined positron emission tomography (PET)/computed tomography. DESIGN: Case report. METHODS:A 75-year-oldwoman presented with a 6-month history of painless, progressive fullness of her right upper eyelid. A PET/computed tomography was obtained to provide functional and anatomic assessment of the orbits. An orbitotomy was performed with sub-total excision of the lesion to obtain histologic diagnosis. RESULTS: The PET/computed tomography scan revealed intensive uptake of tracer in a right orbital mass measuring 2.3 × 1.8 × 2.6 cm. Foci of abnormal tracer uptake were also noted in the right neck, right hilar region, and central abdomen. Histopathologic findings were consistent with follicular cell lymphoma. CONCLUSIONS: The combination of PET/computed tomography provides accurate and precise information in an expedited manner not offered by alternative imaging modalities. PET/ computed tomography imaging should be considered in the evaluation of orbital neoplasms, especially if lymphoma is suspected.
PURPOSE: To report a case of orbital lymphoma with systemic dissemination that was identified and localized by combined positron emission tomography (PET) / computed tomography. DESIGN: Case report. METHODS: A 75-year-oldwoman presented with a 6-month history of painless , progressive fullness of her right upper eyelid. A PET / computed tomography was obtained to provide functional and anatomic assessment of the orbits. An orbitotomy was performed with sub-total excision of the lesion to obtain histologic diagnosis. RESULTS: The PET / computed tomography scan revealed intensive uptake of tracer in a right orbital mass 2.3 × 1.8 × 2.6 cm. Foci of abnormal tracer uptake were also noted in the right neck, right hilar region, and central abdomen. Histopathologic findings were consistent with follicular cell lymphoma. CONCLUSIONS : The combination of PET / computed tomography provides accurate and precise information in an expedited manner not offered by alternative imaging modalities. PET / computed tomography imaging should be considered in the evaluation of orbital neoplasms, especially if lymphoma is suspected.