You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is True about fibrolamellar carcinoma of the liver: and explain in detail?
“A distinctive variant of hepatocellular carcinoma is the fibrolamellar carcinoma, constituting less than 5% of HCCs. This tumor occurs in young male and female adults (20 to 40 years of age) with equal incidence, has no association with HBV or cirrhosis risk factors, and often has a better prognosis
It usually presents as single large, hard "scirrhous” tumor with fibrous bands coursing through it. On microscopic examination, it is composed of well-differentiated polygonal cells growing in nests or cords and separated by parallel lamellae of dense collagen bundles"- Robbins 9th/872-73, 8th/879