Ovarian tumor

[1] They consist of mainly solid tissue, while ovarian cysts contain fluid.

[2] In 2020, the World Health Organization (WHO) divided ovarian tumours as 90% epithelial, 3% germ cell, and 2% sex cord-stromal types.

[3] Tumor of the ovary vary remarkably as they may arise from any of the 3 cell types of the normal ovary.

Histology dictates many aspects of clinical treatment, management, and prognosis.

An 1882 article appearing in Scientific American mentions the case of a patient at University of Pennsylvania Hospital when Dr. William Goodell removed a 112 lbs tumor from a 31 year old patient, who weighted 75 lbs after removal from the tumor.