Figure 2.

Metabolic and histopathological features of the lung granulomatous lesion. Axial chest ¹⁸F-FDG-PET/CT image (A) demonstrating increased metabolism in peribronchovascular nodule localized in the lingular segment of the left lung upper lobe (the units L are the intensity of PET activity, while units W are the intensity of overlap between PET and CT). Lung biopsy: haematoxylin–eosin stain and immunophenotyping showing non-necrotizing granulomatous inflammatory reaction (B) with accumulation of Cluster of Differentiation 68 positive (CD68+) macrophages (C).