Abdominal intercostal hernias are rare in small animals. A 1-year-old, entire, male, domestic shorthaired cat, weighing 3.5 kg was presented with a history of progressive swelling over the right cranial abdomen, noticed over a period of 6 months. The cat had a history of having been attacked by a dog on the right cranial abdomen. On physical examination, a soft tissue mass measuring 11.5 × 8.4 cm was noticed. Survey radiograph revealed the presence of a lobulated organ with soft tissue opacity at the level of the 12th-13th ribs. Abdominal ultrasonography showed herniation/displacement of a structure with soft tissue echogenicity suggestive of right lateral liver lobe with normal parenchyma, hepatic and portal vein. Based on these findings, a traumatic abdominal intercostal hernia was diagnosed and herniorrhaphy was performed. The outcome was favourable.
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