Page 462 - Atlas of Small Animal CT and MRI

452 Atlas of Small Animal CT and MRI

Figure 4.5.10 Severe Bronchiectasis (Canine) CT

(a) DX, RLAT (b) CT, TP (c) GP, TP
4y MC Rottweiler with previous history of eosinophilic granulomatosis that has clinically responded to treatment. Current clinical signs
are consistent with bronchopneumonia. Pronounced dilation of the accessory, middle, and caudal lobe bronchi is evident on thoracic
radiographs (a: arrows), and increased peripheral opacity in the dependent regions is consistent with consolidating infiltrates (a: arrow­
heads). A representative CT image at the level of the accessory and caudal lung lobes reveals marked saccular bronchial dilation involving
all visible lung lobes, fluid accumulation in the most dependent airways, and ventral alveolar infiltrates (b). Transverse sections of an
excised lung lobe document the presence of dilated thick‐walled bronchi filled with exudates (c: arrows). A black thread delineates the
path of the bronchial lumen in the upper specimen (c: arrowhead). Microscopic evaluation confirmed suppurative bronchopneumonia
and marked bronchiectasis. In this dog, bronchiectasis was a sequela of previously diagnosed chronic eosinophilic granulomatosis.
Cannon et al 2013. Reproduced with permission from Wiley.
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Figure 4.5.11 Bronchial Foreign Body (Canine) CT

(a) CT, TP (b) CT, TP
4y F Bearded Collie with cough and recent‐onset lethargy and fever due to pyothorax. The dog was treated and improved but cough
persists. Sequential CT images of the right caudal lung lobe show thickening of the caudal lobar bronchus (a: arrowhead) and a complex
linear foreign body more peripherally (b: arrowhead). The foreign body is soft‐tissue attenuating and is well defined because of surround­
ing gas. Surgery revealed an approximately 7 cm long plant fragment, thought to be an evergreen frond that originated in the distal right
caudal lobar bronchus, penetrated the pulmonary parenchyma, and terminated in the pleural space. Excisional lung biopsy confirmed
chronic catarrhal, suppurative bronchitis, and pleuropneumonia.

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