case_images: PMC10799599_01
case_images: Serial transverse CT images (left to right, cranial to caudal) of the caudal thorax of the cat in case 1; the insert shows a reformatted image in the dorsal plane. Images are pre-contrast and displayed in a lung window. There is a large rounded soft-tissue attenuating mass in the left caudal lung lobe (asterisk) that appears continuous with the left caudal bronchus (arrowhead). The mass contains pinpoint mineral attenuating foci (dashed arrows). Caudal to the mass, there are tubular fluid-filled tapering structures interpreted as bronchi filled with fluid (thick arrows). There is generalized bronchial wall thickening (thin solid arrows)
case_images: 10.1177_20551169231217866-fig1.jpg
case_images: PMC10799599_01_10.1177_20551169231217866-fig1.jpg
case_images: fig1-20551169231217866
case_images: CT examination (without contrast) revealed generalized bronchial wall thickening and a 3 cm diameter, smoothly marginated rounded soft-tissue attenuating (45 Hounsfield units [HU]) mass with multifocal pinpoint mineral densities in the caudal left lung lobe (Figure 1).
case_images: PMC10799599_02
case_images: Transverse (left) and reformatted dorsal plane (right) CT images of the thorax of the cat in case 2; the image on the left is pre-contrast and image on the right is post-contrast; both are displayed in a soft-tissue window. There is a large soft-tissue attenuating mass in the right caudal lung lobe (asterisk) with rim enhancement seen on post-contrast images (dashed arrows). Numerous small mineral bodies are seen in the mass as well as arranged along numerous bronchial lumens (solid arrows), consistent with broncholithiasis
case_images: 10.1177_20551169231217866-fig2.jpg
case_images: PMC10799599_02_10.1177_20551169231217866-fig2.jpg
case_images: fig2-20551169231217866
case_images: CT examination revealed a 6 cm diameter soft-tissue attenuating mass (25-30 HU) in the right caudal lung lobe, which had rim enhancement on post-contrast imaging and a non-enhancing center (Figure 2).
case_images: PMC10799599_03
case_images: Transverse CT images of the caudal thorax of the cat in case 3; the image on the left is a high-resolution image in a lung window while on the right is a post-contrast image in a soft-tissue window. A large gas-cavitated mass is present in the left caudal lung lobe (white asterisk); thin internal septations are present in the mass (thick arrow) and soft-tissue attenuating non-enhancing material (black asterisk) is seen in the dependent portion of the mass consistent with fluid. Thin rim enhancement is noted after contrast administration (arrowhead). Numerous mineral foci are present in the lumen of small airways (dashed arrows) consistent with broncholithiasis. There is diffuse bronchial wall thickening (thin solid arrows)
case_images: 10.1177_20551169231217866-fig3.jpg
case_images: PMC10799599_03_10.1177_20551169231217866-fig3.jpg
case_images: fig3-20551169231217866
case_images: A CT examination revealed a large, cavitated, gas-filled and rim-enhancing mass lesion in the left caudal lung lobe, which appeared to be continuous with a lobar bronchus (Figure 3).