Which of the following is false regarding Fibrolamellar Cascinoma of liver
**Core Concept**
Fibrolamellar hepatocellular carcinoma (FL-HCC) is a rare and aggressive variant of hepatocellular carcinoma, characterized by its distinct histological features and clinical behavior. It typically affects young adults without underlying liver disease or cirrhosis.
**Why the Correct Answer is Right**
FL-HCC is known for its distinct histological features, including a fibrotic stroma and a lack of cirrhosis or underlying liver disease. This tumor type tends to have a better prognosis compared to conventional HCC, particularly in patients who are diagnosed at an early stage. The presence of a fibrotic stroma is a key characteristic of FL-HCC, which distinguishes it from other types of HCC. In contrast to conventional HCC, FL-HCC often lacks genetic alterations in the TP53 gene.
**Why Each Wrong Option is Incorrect**
**Option A:** FL-HCC typically affects middle-aged adults, which is incorrect. FL-HCC is known to affect young adults, often in their second or third decade of life.
**Option B:** FL-HCC is associated with underlying liver disease or cirrhosis, which is incorrect. FL-HCC typically occurs in the absence of cirrhosis or underlying liver disease.
**Option C:** FL-HCC has a poor prognosis, which is incorrect. FL-HCC tends to have a better prognosis compared to conventional HCC, particularly in patients diagnosed at an early stage.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that FL-HCC often presents with a large, solitary tumor and can mimic other benign liver lesions, such as a focal nodular hyperplasia (FNH). A high index of suspicion and imaging characteristics, such as a fibrotic stroma and a lack of vascular invasion, are crucial for accurate diagnosis.
**Correct Answer: B. FL-HCC is associated with underlying liver disease or cirrhosis.**