PMC3741933_01
CT chest showing 1.5 cm x 2.5 cm RUL pleural-based nodule (arrow).
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fig1
CT chest revealed a 1.5 cm x 2.5 cm noncalcified pleural-based RUL nodule, a 1.1 cm calcified nodule in the left upper lobe, and an 8 mm noncalcified nodule in the right lower lobe (Figure 1). 18F-FDG PET/CT scan showed moderately increased uptake in all nodules with a maximum standardized uptake value (SUV) of 3.7 in the RUL nodule (Figure 2).
PET scan showing increased uptake in RUL nodule (arrow).
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fig2
CT chest revealed a 1.5 cm x 2.5 cm noncalcified pleural-based RUL nodule, a 1.1 cm calcified nodule in the left upper lobe, and an 8 mm noncalcified nodule in the right lower lobe (Figure 1). 18F-FDG PET/CT scan showed moderately increased uptake in all nodules with a maximum standardized uptake value (SUV) of 3.7 in the RUL nodule (Figure 2).
Mixed inflammatory infiltrate seen within the nodule.
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fig3
Pathology of both nodules revealed chronic inflammation with necrotizing granulomatous formation consistent with rheumatoid nodules and no evidence of malignancy (Figures 3 and 4).
Multinucleated giant cells with lymphocytes, fibroblasts, and collagen in the granuloma wall.
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fig4
Pathology of both nodules revealed chronic inflammation with necrotizing granulomatous formation consistent with rheumatoid nodules and no evidence of malignancy (Figures 3 and 4).