图中大体标本示偶然发现的管周囊肿，为良性。卵巢上经常可见此种单纯性囊肿，称为卵巢冠囊肿，内容清亮液体，壁内衬扁平的立方上皮。

Here is another common incidental finding: a benign paratubal cyst. Sometimes such simple cysts are found adjacent to ovary and are called parovarian cysts. They are filled with clear serous fluid and lined by flattened cuboidal epithelium.