Hepatic Lobe Torsion in Rabbits: Signs & Emergency Care
Hepatic lobe torsion in rabbits is a rare, life-threatening emergency in which a liver lobe twists on its vascular pedicle, cutting off blood supply and causing acute pain, shock, and rapid organ death.
Sudden onset of extreme lethargy, anorexia, and abdominal pain in a rabbit — particularly without GI stasis signs — should prompt immediate emergency evaluation as hepatic lobe torsion requires urgent surgery.
Last reviewed: June 2026
What Is Hepatic Lobe Torsion in Rabbits?
Hepatic lobe torsion (HLT) occurs when one of a rabbit's liver lobes (rabbits have 4 liver lobes) rotates around its supporting ligament and hepatic vasculature, cutting off venous outflow. The affected lobe becomes congested, then necrotic within hours. Blood leaks from the devascularized lobe into the abdomen, causing hemoperitoneum. As described in Quesenberry & Carpenter's Ferrets, Rabbits & Rodents, HLT is most frequently reported in the caudate lobe, which is least attached and most mobile.
HLT predominantly affects young to middle-aged rabbits (often 2–5 years old) and may be more common in larger breeds such as French Lops and English Lops, though it has been reported across breeds. The exact predisposing factors are not well understood; some cases follow a period of reduced hepatic ligament tension related to changes in body condition. Unlike cats and dogs with GDV (gastric dilatation-volvulus), which is relatively well-known, HLT in rabbits is less recognized by owners, leading to delays in seeking emergency care.
Clinical Signs
HLT presents as an acute crisis with a characteristic pattern:
- Sudden, severe lethargy — the rabbit may be found collapsed or barely responsive
- Complete anorexia (refuses food and water immediately)
- Pale or white mucous membranes from blood loss into the abdomen (hemoperitoneum)
- Abdominal pain: hunched posture, grinding teeth (bruxism), reluctance to move
- Rapid, shallow breathing (pain-induced tachypnea)
- Hypothermia and shock as the crisis progresses
A key distinguishing feature from GI stasis is the rapidity and severity of the collapse — HLT causes a dramatically faster and more severe decline than typical GI stasis. GI stasis rabbits are usually alert and mobile initially; HLT rabbits often present already in shock. The abdomen may feel tense and painful on gentle palpation; free abdominal fluid (hemoperitoneum) may be detectable. As described in the AEMV Pet Care Guides, 2024, rapid deterioration in a rabbit that appeared healthy hours before is a reliable indicator of an acute surgical emergency rather than a medical condition.
Diagnosis
Emergency diagnosis at an exotic or emergency veterinary clinic includes: blood pressure, glucose monitoring, packed cell volume (PCV — to assess blood loss), abdominal radiographs (may show loss of abdominal detail from free fluid), and abdominal ultrasound (confirms free fluid, may visualize a heterogeneous or abnormally positioned liver lobe). Blood chemistry may show dramatically elevated liver enzymes (ALT, AST, GGT) and hyperbilirubinemia. Definitive diagnosis is usually confirmed at surgery.
CT scan, if available and if the rabbit is stable enough to withstand anesthesia for imaging, provides the most detailed pre-operative information about the extent of torsion and vascular compromise. However, in a rapidly deteriorating rabbit, proceeding directly to exploratory surgery without CT may be necessary to save the animal's life.
Treatment and Prognosis
Surgical treatment (hepatic lobectomy — removal of the torsed lobe) is the only curative option. Pre-operative stabilization includes IV fluid resuscitation, oxygen, pain management, and correction of hypothermia. Blood transfusion or colloid administration may be necessary if blood loss is severe. The surgery is considered high-risk because affected rabbits are often already in shock when they present.
Prognosis depends on the degree of organ compromise at the time of surgery and the rabbit's response to pre-operative stabilization. Rabbits that survive the immediate post-operative period have a favorable long-term prognosis — remaining liver lobes compensate well for the removed lobe. Emergency care and stabilization typically costs $800–2,000; surgery adds $2,000–4,000 at an exotic specialist or surgery referral center.
When to See a Vet
Call your vet today if:
- Sudden extreme lethargy in a rabbit that was normal hours ago
- Complete refusal to eat — especially without the slow onset typical of GI stasis
- Hunched posture and apparent abdominal pain
Go to the ER immediately if:
- Pale or white gums
- Collapse or inability to stand
- Rapid, shallow breathing with abdominal pain
- Suspected abdominal fluid (tense, distended abdomen)
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Frequently Asked Questions
How is hepatic lobe torsion different from GI stasis in rabbits? Both cause anorexia and lethargy, but HLT progresses much faster and more severely. A GI stasis rabbit typically remains alert and able to move in the first several hours; an HLT rabbit often collapses rapidly into shock within 1–4 hours of onset. Pale gums, rapid breathing, and abdominal rigidity strongly suggest HLT over GI stasis.
Can hepatic lobe torsion in rabbits be treated without surgery? No — the torsed lobe must be surgically removed. Supportive care alone cannot restore blood supply to the torsed lobe, and without removal, the necrotic tissue will cause progressive sepsis and death. Rapid surgical intervention is the only way to give the rabbit a chance of survival.
How much does hepatic lobe torsion surgery cost in rabbits? Emergency stabilization and initial assessment run $300–800. The surgical procedure itself (hepatic lobectomy at an exotic specialist) typically costs $2,000–4,000, including anesthesia and post-operative monitoring. Total hospitalization for the first 24–48 hours adds $400–1,000. Total costs typically range $3,000–6,000 or more.
What is the survival rate for rabbits with hepatic lobe torsion? Survival rates depend heavily on how quickly surgery is performed. Rabbits that reach surgery without being in profound shock have survival rates of approximately 60–80% based on published case series. Rabbits that present in severe hemorrhagic shock have lower survival rates. Survivors typically recover well and have normal liver function from the remaining lobes.
What breeds are most susceptible to hepatic lobe torsion? HLT has been reported in multiple breeds but may be overrepresented in large breeds such as French Lops and English Lops. Young to middle-aged adults (2–5 years) appear most frequently affected. No sex predisposition has been established. Because the predisposing factors are poorly understood, there is no reliable prevention strategy beyond maintaining optimal body condition.
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