Page 481 - Atlas of Small Animal CT and MRI

Small Airways and Parenchyma 471

Figure 4.6.13 Bacterial Bronchopneumonia (Canine) CT
8y FS German Shepherd cross with a right
axillary mass. Alveolar infiltrates were detected
on thoracic radiographs. Images a and b are
representative images acquired at the level of
the right middle lung lobe. There are consoli-
dating alveolar infiltrates of the right middle
lung lobe with well‐demarcated air bronch-
ograms. The lobe retains normal volume, indi-
cating the presence of infiltrates rather than
atelectasis. Bronchoalveolar lavage revealed
suppurative inflammation.

(a) CT, TP (b) CT, TP

Figure 4.6.14 Mycoplasma Pneumonia (Feline) CT

(a) DX, LLAT (b) DX, DV

(c) CT, TP (d) CT, TP (e) ES
5y Domestic Shorthair with 5‐month history of cough. Images c and d are representative images of the mid and caudal thorax and are
ordered from cranial to caudal. There is a prominent diffuse bronchial pattern (a,b), pulmonary hyperinflation (a,b), and right middle lung
lobe collapse (a,b: arrows) on the radiographic examination. On CT images, marked airway wall thickening is evident, and large bronchial
lumina appear dilated (c,d: arrowheads). There are additional interstitial to consolidating alveolar pulmonary infiltrates peripherally. Both
the right middle lung lobe (not shown) and the caudal component of the left cranial lung lobe (c: arrow) are collapsed. Copious mucoid
exudate was encountered on bronchoscopic examination (e). Exudate cytology revealed marked suppurative inflammation and cultured
positive for Mycoplasma.
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