Fig. 2From: Radiographic and ultrasonographic findings in a dog with emphysematous pyometraUltrasound scan of the caudal abdomen, transverse plane (left of the image is the right of the dog). This close-up image allows the differentiation between the walls of the two tubular structures. On the left side a layered wall of the colon (black cursors) and on the right side a homogenously hypoechoic wall of the uterus (white cursors). Note that some fluid content can be seen in the uterus (arrow) which is otherwise gas-filled (asterisk)Back to article page