Hepatic abscess is a pus-filled cyst in the liver caused most commonly by bacterial infection spreading from the bile ducts or portal vein. Common symptoms include fever, pain, chills, and right upper quadrant discomfort. Diagnosis is typically made through ultrasound, CT scan, or blood tests. Treatment involves antibiotics such as cephalosporin and metronidazole. For large abscesses, ultrasound-guided needle aspiration may be used. Complications can include lung or abdominal inflammation if the abscess ruptures.