All of the following are true about fibrolamellar HCC except:
**Core Concept**
Fibrolamellar hepatocellular carcinoma (HCC) is a rare subtype of hepatocellular carcinoma characterized by its distinct histological features and unique clinical behavior. It typically occurs in young individuals without underlying liver disease or cirrhosis, unlike traditional HCC.
**Why the Correct Answer is Right**
Fibrolamellar HCC lacks the typical risk factors associated with traditional HCC, such as chronic hepatitis B or C infection, alcohol abuse, or non-alcoholic steatohepatitis (NASH). This subtype is often found in non-cirrhotic livers and tends to present with a better prognosis compared to traditional HCC. Unlike traditional HCC, fibrolamellar HCC usually does not have a background of chronic liver disease or cirrhosis.
**Why Each Wrong Option is Incorrect**
**Option A:** Fibrolamellar HCC is not typically associated with underlying cirrhosis, but it can be seen in individuals with underlying liver disease. However, this statement is not entirely false, as some cases may still have underlying liver disease.
**Option B:** This option is not provided, so it cannot be evaluated.
**Option C:** Fibrolamellar HCC is indeed more common in young individuals without underlying liver disease, but it can also occur in older individuals. However, this statement is not entirely false, as it is true that fibrolamellar HCC occurs in younger individuals.
**Option D:** This option is not provided, so it cannot be evaluated.
**Clinical Pearl / High-Yield Fact**
Key distinguishing features of fibrolamellar HCC include its characteristic histological appearance, which includes a fibrotic stroma, and its tendency to occur in young individuals without underlying liver disease. It's essential to consider this subtype in the differential diagnosis of hepatocellular carcinoma, especially in patients without a history of liver disease.
**Correct Answer:** A.