Page 494 - Atlas of Small Animal CT and MRI

484 Atlas of Small Animal CT and MRI

Figure 4.6.33 Osseous Metaplasia (Canine) CT

(a) CT, TP (b) CT, TP (c) CT, TP
12y FS Greyhound. A thoracic CT examination was performed as part of a staging evaluation for an abdominal hemangiosarcoma. Highly
attenuating, well‐demarcated miliary nodules are seen in the periphery of the pulmonary parenchyma in representative images (a–c:
arrowheads). Given their small diameter, the level of attenuation exceeds what would be expected if nodules had soft‐tissue density.

Figure 4.6.34 Pulmonary Fibrosis (Canine) CT

(a) DX, RLAT (b) CT, TP (c) CT, TP
9y MC Doberman Pinscher with a right caudal lung lobe adenoma. There is a moderate unstructured interstitial pattern in the caudodorsal
lung field on thoracic radiographs (a). CT images of the caudal lung lobes reveal unstructured and linear regions of increased attenuation
that are located primarily in the subpleural regions of the lung (b,c). A thin‐walled bulla is also present in the right caudal lobe (b) and is
considered an incidental finding. Right caudal lung lobectomy was performed to remove the pulmonary mass (not shown). Pathologic
diagnosis of the unstructured and linear hyperattenuating lung lesions described above was marked multifocal to coalescing chronic inter-
stitial fibrosis. The inciting cause for the fibrosis was not determined but was thought likely to be due to a previous inflammatory insult.

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