Gynaecology & Obstetrics General 20ee69f6 Endometriomas on ultasound appear as A Solid with diffuse internal low-level echoes. B Solid with focal internal low-level echoes. C Cystic with diffuse internal low-level echoes. D Cystic with focal hyperechoic internal echoes. High-Yield Explanation Endometrioma classically is cystic with homogenous, low-level internal echoes, i.e ground-glass echogenicity.