Liver Injury

Overview

A liver injury is damage to the liver caused by a forceful blow or a penetrating wound to the abdomen. The liver is the largest solid organ in the body and sits in the upper right side of the abdomen, partly protected by the lower ribs. Because it has a rich blood supply, even a moderate tear can lead to significant internal bleeding.

Liver injuries range from a minor bruise (contusion) or shallow tear (laceration) to a deep rupture that fragments the organ. Doctors grade these injuries by severity to guide treatment. Many lower-grade liver injuries heal on their own with close monitoring, while severe injuries can be life-threatening and require emergency care.

Symptoms

Symptoms depend on how badly the liver is damaged and how much bleeding occurs. A liver injury should be suspected after any significant impact to the upper abdomen or right lower chest.

• Pain in the upper right abdomen, which may spread to the right shoulder
• Tenderness, bruising, or swelling over the abdomen
• Signs of blood loss: dizziness, weakness, pale or clammy skin, rapid heartbeat
• Nausea and vomiting
• A rigid or distended belly
• Confusion or fainting in severe cases

Heavy internal bleeding is a medical emergency. After any serious trauma, sudden worsening abdominal pain, lightheadedness, or fainting needs immediate emergency care.

Causes

Liver injuries are usually the result of sudden, forceful trauma to the abdomen or lower chest.

• Blunt trauma: Motor vehicle collisions are the most common cause, followed by falls from height, pedestrian accidents, sports impacts, and physical assault.
• Penetrating trauma: Stab wounds, gunshot wounds, or other objects that pierce the abdomen.
• Medical procedures: Rarely, a liver biopsy or other procedure can injure the liver.

A liver that is already enlarged or diseased may be more easily injured by a relatively minor impact.

Risk Factors

• High-speed driving or not wearing a seatbelt
• Contact and high-impact sports
• Work or activities with a high fall risk
• Conditions that enlarge the liver, which leave it less protected by the rib cage
• Bleeding disorders or use of blood-thinning medication, which can worsen bleeding

Diagnosis

Doctors evaluate a suspected liver injury quickly, since bleeding can be hidden. Assessment usually includes:

• Physical examination: Checking the abdomen for tenderness, bruising, and rigidity, along with blood pressure and pulse.
• CT scan: The main test for a stable patient, showing the location, depth, and grade of the injury and any active bleeding.
• Ultrasound (FAST exam): A rapid bedside scan in the emergency department to detect free blood in the abdomen.
• Blood tests: To check blood counts, clotting, and liver function.

Treatment

Treatment depends on how severe the injury is and whether bleeding can be controlled.

• Non-operative management: Most lower-grade injuries in a stable patient are treated with close hospital monitoring, rest, fluids, and repeat scans. Many liver injuries heal without surgery.
• Angioembolization: A radiologist can thread a catheter to the bleeding vessel and block it from inside, stopping bleeding without open surgery.
• Surgery: Needed for ongoing or massive bleeding, or for a patient whose blood pressure cannot be stabilized. Surgeons repair, pack, or in severe cases remove part of the liver.
• Supportive care: Blood transfusions and treatment of other injuries are often required.

Recovery takes weeks, and follow-up imaging is used to confirm healing before returning to strenuous activity.

Prevention

• Always wear a seatbelt and ensure children use proper car seats
• Use appropriate protective gear in contact sports
• Reduce fall hazards at home and at work
• Drive at safe speeds and avoid distracted or impaired driving
• Discuss bleeding risk with your doctor if you take blood thinners

When to See a Doctor

Any significant blow to the abdomen or lower chest should be evaluated, even if you feel well at first, because internal bleeding can develop over hours. Call emergency services or go to the nearest emergency department right away if, after an injury, you have:

• Severe or worsening abdominal pain
• Pain spreading to the right shoulder
• Dizziness, fainting, or a racing heartbeat
• Pale, cold, or clammy skin
• A swollen, hard, or very tender belly

Related Topics

Frequently Asked Questions

References

1. American College of Surgeons. Trauma management resources.
2. MedlinePlus, U.S. National Library of Medicine. Liver injury.
3. Mayo Clinic. Liver problems — Symptoms and causes.
4. National Institutes of Health (NIH). Abdominal trauma overview.