Fig. 3From: Radiographic and ultrasonographic findings in a dog with emphysematous pyometraUltrasound image in a sagittal plane of the caudal abdomen (left of the image is cranial). The uterus (U) is on the left of the image and the colon (C) is on the right. Note the uneven uterine luminal surface, with hyperechoic speckles in the wall (arrow), likely indicating infiltration of gas in the mucosa, indicative of emphysema or ulcerationBack to article page