_:vb50953970 . _:vb50953970 . _:vb50953970 . _:vb50953970 . _:vb50953970 "url:https://www.ncbi.nlm.nih.gov/pubmed/26881611"^^ . _:vb50953970 . _:vb50953970 "An ovarian benign neoplasm that has_material_basis_in glandular and fibrous tissues, with a relatively large proportion of glands and is characterized by the presence of serous fluid."^^ .