Hepatocellular carcinoma: US evolution in the early stage

Area of Science:

• Hepatobiliary Imaging
• Oncology Ultrasound

Background:

• Hepatocellular carcinoma (HCC) is a primary liver malignancy.
• Understanding early-stage HCC sonographic evolution is crucial for monitoring and management.

Purpose of the Study:

• To investigate the longitudinal sonographic changes in early-stage hepatocellular carcinoma.
• To characterize the echogenicity evolution patterns of HCC over time.

Main Methods:

• Prospective observation of 26 HCCs in 24 patients using real-time ultrasound.
• Regular sonographic follow-up over 90 to 691 days.
• Analysis of echogenicity changes (hypoechoic, isoechoic, hyperechoic) and tumor characteristics.

Main Results:

• Initially hypoechoic HCCs frequently evolved to isoechoic or hyperechoic patterns.
• Some HCCs developed acquired hyperechogenicity, becoming inhomogeneous and larger.
• Initially hyperechoic HCCs remained homogeneous and smaller, retaining their echogenicity.

Conclusions:

• Most small HCCs exhibit progressive echogenicity changes from hypoechoic to inhomogeneously hyperechoic as they grow.
• A subset of HCCs presents with and maintains diffuse hyperechogenicity from the outset.