Which diagnostic test is commonly used to confirm liver cancer?

The biopsy is the most definitive test for confirming liver cancer because it involves obtaining a tissue sample from the liver. The tissue is then examined histologically to determine the presence of cancer cells, providing a definitive diagnosis. While imaging techniques like CT scans and ultrasounds are crucial for detecting abnormalities in the liver, they do not provide a definitive diagnosis on their own. These methods can identify masses or lesions that may suggest cancer but cannot confirm it. Endoscopy, while useful for visualizing certain gastrointestinal tract issues, is not typically utilized for diagnosing liver cancer directly. Therefore, a biopsy offers the most conclusive evidence for confirming liver cancer by allowing for direct examination of the cancerous tissue.