There are several types of ovarian cancer. Ovarian tumors are the most histologically diverse group of tumors. At least 80 percent of malignant ovarian tumors arise from the lining of the ovary and are called epithelial carcinomas. The most common type is ...
There are primary and secondary brain tumors. Tumors that begin in brain tissue are known as primary tumors. Secondary tumors are when cancer spreads from another site to the brain, which is called metastasis. Brain tumors are classified by the type of tis...