Cavernous hemangiomas of the liver studied by ultrasound. Enhancement posterior to a hyperechoic mass as a sign of hypervascularity.

Thirty-seven hyperechoic cavernous hemangiomas of the liver were investigated by sonography and angiography. Posterior enhancement of a hyperechoic mass on sonography was correlated with hypervascularity on angiography. Such enhancement was noted in 76.5% of cases and in all angiomas larger than 25 mm in diameter.