Page 402 - Atlas of Small Animal CT and MRI

392 Atlas of Small Animal CT and MRI

Figure 4.1.3 Thoracic Wall Penetrating Foreign Body (Canine) CT
5y FS Pointer cross with abrupt coughing
episode while outside 5 months previously.
Owners noted a small open wound on the
chest wall at that time. Currently has a 5‐day
history of dyspnea. A short, linear, soft‐tissue
attenuating opacity is seen in the region of
the left caudal lung lobe on survey radio-
graphs (a: arrowhead). A soft‐tissue attenu-
ating, linear foreign body (b: arrow) and a
small pneumothorax (b: arrowhead) are seen
on transverse CT images. The full length of
the foreign body is best appreciated on
a MIP image oriented in the transverse
plane (c: arrowheads). The foreign body was
(a) DX, DV (b) CT, TP removed via thoracotomy (d: arrow) and was
determined to be a carbon fiber or plastic rod
that the dog had impaled itself on 5 months
previously.

(c) CT, MIP, TP (d) GP

Figure 4.1.4 Thoracic Wall Abscess (Canine) CT

(a) DX, DV (b) CT, TP (c) CT+C, TP
6y MC Golden Retriever with a fluctuant mass of the left ventral body wall. The dorsoventral scout view of the thorax shows a large soft‐
tissue mass arising from the left thoracic wall (a). A large, ovoid mass is present on the left ventral body wall, deep to the external abdomi-
nal oblique muscles and with encroachment internal to the costal margins (b,c: asterisk). The central part measures approximately 15 HU
on both unenhanced and enhanced CT images (b,c), and the mass has a thick, peripherally enhancing rim (c). There is also evidence of
diffuse cellulitis more superficially (b,c: arrowhead). The mass was surgically drained and found to contain purulent material.
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