Ovarian tumor
Ovarian tumors, or ovarian neoplasms, are tumors in the ovary. Not all are ovarian cancer. They consist of mainly solid tissue, while ovarian cysts contain fluid.
In 2020, the World Health Organization divided ovarian tumours as 90% epithelial, 3% germ cell, and 2% sex cord-stromal types.
Histopathologic classification
Tumor of the ovary vary remarkably as they may arise from any of the 3 cell types of the normal ovary.Ovarian tumors are classified according to the histology of the tumor, obtained in a pathology report. Histology dictates many aspects of clinical treatment, management, and prognosis.
The most common forms are:
Mixed tumors contain elements of more than one of the above classes of tumor histology.