Large ovarian cyst

65 year old post-menopausal female complaint of abdominal bloating and hard lump felt in lower abdomen.

There is a large cystic lesion seen in the lower abdomen with homogenous intralesional lower-echoes echogenicity. This is indicative of a very proteinaceous content. The lesion measures about 18cm. No mural nodule. No intralesional vascularity seen. 
Unable to assess uterus, ovaries and adnexa due to obstructed view by the large lesion. 
A diagnosis of ovarian cyst was made and she was referred to a gynaecologist.