NCIt definition : A malignant serous cystic epithelial neoplasm arising from the ovary. It is characterized
by the presence of glandular, papillary, or solid structures. Psammoma bodies may
be present. In well differentiated cases the malignant epithelial cells resemble the
cells of fallopian tube epithelium. In poorly differentiated cases the malignant epithelial
cells show anaplastic features.;