What is a key limitation of using alpha-fetoprotein for HCC surveillance or diagnosis?

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Multiple Choice

What is a key limitation of using alpha-fetoprotein for HCC surveillance or diagnosis?

AFP is not a reliable stand-alone test for HCC because it lacks both sensitivity and specificity. Many people with early-stage HCC have normal AFP levels, so a normal result does not rule out cancer. Conversely, AFP can be elevated in non-malignant liver conditions such as active hepatitis or cirrhosis, as well as in non-hepatic situations like pregnancy or germ cell tumors. Because of these limitations, AFP alone cannot diagnose HCC or be used effectively for surveillance; imaging studies (ultrasound routinely for surveillance, and CT/MRI when there’s suspicion) are the primary tools, and AFP trends can add context but must be interpreted alongside imaging and the clinical picture.

AFP is not a reliable stand-alone test for HCC because it lacks both sensitivity and specificity. Many people with early-stage HCC have normal AFP levels, so a normal result does not rule out cancer. Conversely, AFP can be elevated in non-malignant liver conditions such as active hepatitis or cirrhosis, as well as in non-hepatic situations like pregnancy or germ cell tumors. Because of these limitations, AFP alone cannot diagnose HCC or be used effectively for surveillance; imaging studies (ultrasound routinely for surveillance, and CT/MRI when there’s suspicion) are the primary tools, and AFP trends can add context but must be interpreted alongside imaging and the clinical picture.

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