As has been mentioned below, echogenic refers to the liver having strong reflectors of sound, consistent with possible fatty liver or prior hepatitis. Gallstones can cause a more discrete echogenicity - not the diffuse kind that was found in your study.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b