Abstract

A 70-year-old woman with a long history of rheumatoid arthritis presented with a history of cough and wheezing. Chest radiography demonstrated pulmonary masses, including a large left lower lobe mass, which exhibited significant F-18 FDG activity on subsequent F-18 FDG PET imaging. Biopsy of the pulmonary mass demonstrated a large B-cell lymphoma. The patient stopped methotrexate and follow-up studies demonstrated considerable reduction in size and metabolic activity of the mass without further intervention.

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