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Fig. 2 —61-year-old man with early-stage parenchymal actinomycosis.
Delayed contrast-enhanced CT image obtained with mediastinal window settings
shows small subpleural nodule in left upper lobe. Note central low-attenuation
area with peripheral enhancing portion of nodule and adjacent pleural
thickening (arrows). Actinomycosis was diagnosed using percutaneous
transthoracic core biopsy.
