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Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

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Chapter Two The Thorax 205<br />

Fig. 2-185 A <strong>and</strong> B, A 14-year-old<br />

female Doberman Pinscher with a 3-<br />

month history of weight loss. The<br />

dog was depressed <strong>and</strong> dehydrated.<br />

There is a diffuse increase in pulmonary<br />

interstitial densities<br />

throughout the lung. These densities<br />

are poorly defined. Well-defined<br />

nodular densities are not identified.<br />

The radiographic findings may be<br />

due to disseminated neoplasia, granulomatous<br />

disease, or chronic infection.<br />

Diagnosis: Diffuse metastatic<br />

neoplasia. A lung aspirate was performed<br />

<strong>and</strong> metastatic carcinoma<br />

was detected.<br />

A<br />

B<br />

P N E U M O C O N I O S I S<br />

Inhalation of irritating substances such as smoke or dust particles can produce pulmonary<br />

fibrosis without inducing a severe inflammatory response. This may occur acutely but<br />

more commonly develops over a long period without apparent clinical signs. The diffuse<br />

or disseminated pulmonary interstitial density often will be mild <strong>and</strong> frequently is seen<br />

with advanced age. 574,576

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