Figure 6.

(a) Right lateral thoracic radiograph from a cat in left heart failure. PE is present, and infiltrates are most prominent between the heart and diaphragm. PLE is also present dorsally at the angle between the spine and the diaphragm. (b) Ventrodorsal thoracic radiograph from the same cat. PE and PLE make it difficult to see the left side of the cardiac silhouette, but the left auricle appears to be enlarged. (c) Right lateral thoracic radiograph and (d) ventrodorsal thoracic radiograph from the same cat after loop diuretic therapy. In (c), the PE and PLE are both improved. In (d), a left auricular bulge at the 2 o’clock to 3 o’clock position is now visible