| Clinical Cases
| Case Answer/Discussion
Normal adult Basset Hound thorax. The cause for this
patient's clinical signs is not apparent on the radiographs.
The Basset Hound is an example of a "shallow-chested"
breed. This thoracic conformation may give the false impression
of cardiomegaly due to 1) the relatively small tracheospinal angle
and 2) the "square" or "rounded" appearance
of the heart, both of which are normal for this breed. In addition,
the costochondral junctions of the Basset Hound indent the thoracic
wall. This causes undulating bands of soft tissue opacity along
the lateral margins of the thorax on the dorsoventral view. These
bands can be mistaken for pleural effusion by the unwary. We know
this patient does not have pleural effusion because no pleural
fissure lines are present.