PMC8288200_01
50-year-old female patient's chest X-ray demonstrates multiple rounded, nodular and mass like pulmonary opacities in the middle and lower zones of both lungs.
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F1
Chest X-ray demonstrated multiple rounded nodular and mass-like opacities in the middle and lower zones of both lungs (Figure 1).
Axial images of non-contrast-enhanced chest computed tomography show multiple, nodular, and mass-like lesions in both lungs with peripheral and lower lobe-weighted distribution (a-c). Air bronchogram sign is observed in most of the lesions (arrows) (b, c).
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F2
Multiple, nodular, and mass-like lesions demonstrating air bronchogram sign in both lungs with peripheral and lower lobe-weighted distribution were observed (Figure 2).
Axial image of non-contrast-enhanced chest computed tomography obtained X days after corticosteroid treatment shows that the nodules and masses disappeared leaving reticulations and ground-glass opacity behind.
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F3
The control CCT obtained one week after corticosteroid treatment showed the lesions regressed almost completely, leaving fibrotic changes in place (Figure 3).
PMC8288200_02
Axial (a) and coronal (b) images of contrast-enhanced chest computed tomography of a 26-year-old female patient shows a perihilar mass adjacent to the right main pulmonary artery, surrounding the right main and intermediate bronchus with a smooth contour and homogeneous internal structure. Multiple mediastinal lymph nodes with a maximum short-axis diameter of 13 mm are also detected (c). On positron emission tomography with 2-deoxy-2-[fluorine-18] fluoro-D-glucose integrated with computed tomography, the mass shows a slightly increased 18F-FDG uptake (SUVmax: 2.7) (d).
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F4
Contrast-enhanced CCT scan demonstrated a 30x37x47 mm in size perihilar mass with a smooth contour and homogeneous internal structure (Figure 4a and b). Multiple mediastinal lymph nodes with a maximum short-axis diameter of 13 mm were seen (Figure 4c). On positron emission tomography with 2-deoxy-2-[fluorine-18] fluoro- D-glucose integrated with computed tomography (18F-FDG PET/CT), the mass showed a slightly increased 18F-FDG uptake (SUVmax: 2.7) (Figure 4d).
PMC8288200_03
56-year-old male patient's axial image (a), sagittal and coronal (b) reformatted images of contrast-enhanced chest computed tomography show hypodense solid mass on the left side of anterior thoracic wall at the level of second costae causing destruction and invading the pectoralis muscle. Extension of the mass to the intrathoracic area with pleural thickening and reticulations in the adjacent lung parenchyma, suggests invasion (c). A lymph node 8x7mm in size is observed in the left internal mammary chain (d). On positron emission tomography with 2-deoxy-2-[fluorine-18] fluoro-D-glucose integrated with computed tomography, intense increased F-18 FDG uptake (SUVmax: 12.0) was noted in the lesion (e).
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F5
The mass measured 25x35x37 mm in size caused destruction in the adjacent costa and invaded the pectoralis muscle (Figure 5a and 5b). There was also an extension of the mass to the intrathoracic area with pleural thickening and reticulations in the adjacent lung parenchyma, suggesting invasion (Figure 5c). Several lymph nodes, the largest of which was 8x7mm in size, were observed in the left internal mammary chain (Figure 5d). In 18F-FDG PET/CT performed for further evaluation, increased F-18 FDG uptake (SUVmax: 12.0) was noted in the lesion (Figure 5e).