Line 7:1·"Benign" is not a recognised heading for this article type.
"Malignant"
Line 20:1·"Malignant" is not a recognised heading for this article type.
Inline EG
suggestion
"The presence of hyperechogenicity can be a result of fat within a liver lesion 2, although some non-fat-containing lesions may also be echogenic (e.g. hepatic haemangioma)."
Line 38:160·Consider replacing a bracketed e.g. with an inline e.g. after a comma.