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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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342 <strong>Small</strong> <strong>Animal</strong> Radiolo g y <strong>and</strong> Ultrasono graphy<br />

Fig. 3-111 An 8-year-old. castrated<br />

Siamese cat with vomiting for 2<br />

months. A, The lateral view shows<br />

dilation of the small intestine but the<br />

cause of this is not readily apparent.<br />

B, On the ventrodorsal view, after 4<br />

hours (delayed passage time), there<br />

is dilation of the ileum, which ends<br />

abruptly due to a concentric restriction<br />

of the lumen. A thin stream of<br />

barium is seen extending for approximately<br />

2 cm to a normal-sized portion<br />

of ileum (open white arrow).<br />

Differential diagnoses for a focal<br />

concentric lesion include adenocarcinoma,<br />

lymphoma, or granuloma.<br />

Diagnosis: Adenocarcinoma of the<br />

ileum.<br />

A<br />

B

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