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Fig. 2C —Actinomycosis in 48-year-old man. Significantly increased ¹⁸F-FDG uptake (peak standardized uptake value = 16.5) is noted in lesion of left upper lobe on PET (B) and integrated PET/CT (C) images. Small focus of activity (arrow, B) medial to main lesion is also portion of inflammatory lesion, which could be connected to main lesion on inferior images.