Understanding Tumors

Normally cells divide only when additional cells are required for normal body function. However, at certain times the controls that regulate when a cell divides are lost. This results in accumulation of more and more cells without order. Eventually these cells grow into a mass and this is termed a 'tumor'. It is important to understand that not all tumors are cancer.

normal ovary

Types of Ovarian Cancer

There are three main types of ovarian tumors:

  • Epithelial tumors- derived from the cells on the surface of the ovary. This is the most common form of ovarian cancer and occurs primarily in adults.
  • Germ cell tumors- derived from the egg producing cells within the body of the ovary. This occurs primarily in children and teens and is rare by comparison to epithelial ovarian tumors.
  • Stromal tumors - rare in comparison to epithelial tumors and this class of tumors often produces steroid hormones.

Under the Microscope: Epithelial Ovarian Tumors

  • High-Grade Serous Carcinoma Epithelial Ovarian Tumor

  • Ovarian Endometrioid Carcinoma Epithelial Tumor

  • Clear Cell Carcinoma Epithelial Tumor

  • Mucinous Carcinoma Epithelial Tumor

  • Low-Grade Serous Carcinoma Epithelial Tumor

Under the Microscope: Epithelial Ovarian Tumors






Under the Microscope: Germ Cell Ovarian Tumors

  • Dysgerminoma Germ Cell Ovarian Tumor

  • Yolk Sac Germ Cell Ovarian Tumor

Under the Microscope: Germ Cell Ovarian Tumors



Under the Microscope: Sex Cord Stromal Ovarian Tumors

  • Adult Granulosa Cell Ovarian Tumor

  • Sertoli-Leydig Cell Ovarian Tumor

Under the Microscope: Sex Cord Stromal Ovarian Tumors