Page 414 - Atlas of Small Animal CT and MRI

Figure 4.2.7 Pleuritis and Pleural Foreign Body (Canine) CT

2y MC Belgian Malinois. Thoracic radiographs
revealed a focal left caudal pulmonary infiltrate
and pleural fissure lines (a: arrow). Thoracic
CT confirmed the presence of a small pleural
fluid volume (b: arrowheads) and a focal lesion
consisting of a peripheral consolidating pul-
monary component and an adjacent pleural
component (b: arrow). Presumptive diagnosis
was focal foreign‐body pneumonia and pleuri-
tis from migrating plant awn. The diagnosis
was confirmed by bronchoscopy and partial
lung lobectomy performed 3 days following
the CT scan.

(a) DX, LAT (b) CT, TP

Figure 4.2.8 Pyothorax (Canine) CT

(a) CT, TP (b) CT, TP (c) CT+C, DP

(d) CT+C, TP (e) CT+C, TP
8y MC Labrador Retriever with recent‐onset increased respiratory effort. Representative CT images include unenhanced (a,b) and cor-
responding contrast‐enhanced (d,e) transverse images and a dorsal plane reformatted image (c) of the ventral thorax. Moderate bilateral
pleural effusion is present with fluid distributed primarily in the dependent thorax (a,b: asterisks). The ventral lungs are atelectatic
(a: arrows) with nondependent regions better aerated. Following contrast medium administration, there is ill‐defined but marked hetero-
geneous contrast enhancement in the ventral paramediastinal and ventral pleural space regions (c,e: arrows). Surgical exploration with
biopsy revealed chronic fibrinosuppurative pleuritis with villonodular mesothelial proliferation and multifocal abscessation. A plant awn
foreign body was found in the suppurative effusion.

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