case_images: PMC11074407_01
case_images: Lateral abdominal radiograph of an 8-month-old British short hair cat with acute abdomen. Preoperative right lateral abdominal radiograph of this cat showed gas-filled segmental dilation of small intestinal loops, with no apparent presence of foreign bodies or mass lesions.
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case_images: fig1
case_images: Abdominal radiographs showed segmental gas-filled dilation of the small intestine (Figure 1).
case_images: Ultrasonography images of an 8-month-old British short hair cat suspected with a small intestinal mechanical obstruction. Longitudinal (A) and transverse (B) images at the level of palpable mass-like lesion revealed dilated loops of the small intestine. Marked segmental dilation of intestinal loops with reduced peristaltic movement of the intestinal contents was observed. The normal wall layering of the intestine was disrupted, and on the transverse image (B), the lesions resembled multi-layered concentric rings. Hyperechoic fat adjacent to the lesion was also detected.
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case_images: fig2
case_images: Abdominal ultrasound revealed significant segmental dilation of small intestinal loops, with disruption of normal layering in the intestinal wall (Figure 2). No visible foreign body or mass was detected; however, the transverse image of the lesions exhibited characteristics resembling a target lesion (Figure 2B), suggesting a high suspicion of small intestinal intussusception.
case_images: Intraoperative images of an 8-month-old British short hair cat with a transmesenteric internal hernia. Emergency laparotomy revealed congenital mesenteric defects (A, arrow heads) with the engorged vessels encircling the mid-jejunum (A, arrow). The blood vessels around the small intestines were carefully isolated and ligated (B, arrows). The aboral part of the jejunum showed mild distension and hyperemia; fortunately, no necrotic areas were identified.
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case_images: fig3
case_images: The obstruction site involved a herniated small intestine that was strangulated by the surrounding mesenteric blood vessels (Figure 3A). The blood vessels encircling the segments of the small intestine were carefully dissected and ligated, enabling the observation of the intestinal segments (Figure 3B).
case_images: Gross images of an 8-month-old British short hair cat with a congenital small bowel mesenteric defect. Congenial defects of the mesentery with internal hernia were confirmed in this cat. When the jejunum was exposed, the mesenteric vascular arcades include vasa recta appeared normal, but a significant portion of the mesentery were absent.
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case_images: fig4
case_images: A substantial portion of the small intestinal mesentery were absent, although the mesenteric vascular arcades include vasa recta, appeared normal (Figure 4).