Case summary A 10-week-old intact male domestic shorthair kitten presented for an acute onset of lethargy, vomiting and anorexia. An abdominal mass effect was palpable on presentation. Blood work, abdominal radiographs and point-of-care abdominal ultrasound showed severe anemia, decreased serosal detail and abdominal effusion, respectively. Based on the concern for an abdominal organ torsion or ruptured mass, an emergency abdominal exploratory surgery was performed. Torsion of the entire caudate liver lobe was discovered with a secondary hemoabdomen, and a liver lobectomy was performed. The kitten was stabilized and discharged 3 days after surgery. At the recheck examination, 15 days postoperatively, the patient was reported to be doing well.

Relevance and novel information Liver lobe torsion is a rare condition previously reported in six other cats; however, this is the first peer-reviewed report in a kitten successfully treated with surgery with no identifiable underlying cause.