Fibrolamellar carcinoma: 2012 update

Area of Science:

• Hepatology
• Oncology
• Cancer Biology

Background:

• Fibrolamellar carcinoma (FLC) is a rare primary liver cancer predominantly affecting children and young adults.
• Unlike typical hepatocellular carcinoma, FLC lacks association with chronic liver disease or cirrhosis.
• FLC exhibits a better prognosis than hepatocellular carcinoma, largely due to patient age and absence of cirrhosis.

Purpose of the Study:

• To comprehensively review the clinical, pathological, and basic science literature on fibrolamellar carcinoma.
• To identify key areas for future research in FLC.

Main Methods:

• Literature review of clinical, pathological, and basic science studies on FLC.
• Analysis of histological and molecular characteristics of FLC.
• Comparison of FLC with typical hepatocellular carcinoma.

Main Results:

• FLC presents with large cells, abundant mitochondria, prominent nucleoli, and extensive intratumoral lamellar fibrosis.
• Tumor cells display hepatocellular, biliary, and neuroendocrine differentiation.
• FLC lacks common mutations found in hepatocellular carcinoma (TP53, CTNNB1).

Conclusions:

• Fibrolamellar carcinoma is a distinct liver malignancy with unique pathological and molecular features.
• Resectability is the most critical prognostic factor for FLC.
• Further research is essential to elucidate the etiology and genetic underpinnings of FLC.