Which benign liver lesion is hyperechoic on ultrasound and is associated with tuberous sclerosis?

Which benign liver lesion is hyperechoic on ultrasound and is associated with tuberous sclerosis?

• A. Liver Cell Adenoma
• B. Hepatic Lipoma
• C. Fibrolamellar carcinoma
• D. Hepatoblastoma

Answer: (B)

Fat content tends to make a lesion appear very bright on ultrasound. In tuberous sclerosis, lipomatous (fat-containing) lesions can occur in multiple organs, including the liver. A hepatic lipoma would therefore present as a benign, well-defined, hyperechoic lesion because the fat reflects ultrasound strongly and there is usually little to no internal vascularity. This combination of bright appearance on ultrasound and the tendency for fat-containing hamartomatous lesions in tuberous sclerosis makes hepatic lipoma the best fit. The other options don’t align as well with this scenario: a liver cell adenoma is benign and vascular but isn’t characteristically tied to tuberous sclerosis; fibrolamellar carcinoma is a rare cancer with a central scar in young patients; hepatoblastoma occurs in children and has different imaging and clinical features.

Fat content tends to make a lesion appear very bright on ultrasound. In tuberous sclerosis, lipomatous (fat-containing) lesions can occur in multiple organs, including the liver. A hepatic lipoma would therefore present as a benign, well-defined, hyperechoic lesion because the fat reflects ultrasound strongly and there is usually little to no internal vascularity. This combination of bright appearance on ultrasound and the tendency for fat-containing hamartomatous lesions in tuberous sclerosis makes hepatic lipoma the best fit. The other options don’t align as well with this scenario: a liver cell adenoma is benign and vascular but isn’t characteristically tied to tuberous sclerosis; fibrolamellar carcinoma is a rare cancer with a central scar in young patients; hepatoblastoma occurs in children and has different imaging and clinical features.