A malignant tumor of the ovary (or just about any other organ) is a tumor that has become much worse. This tumor is one that might have become invasive to the point of destroying a given organ. Or it may have "thrown off cells" and metastasized, relocating in another organ or organs.
Whatever the diagnosis, the response should be an aggressive medical workup and a full disclosure of the severity of the situation. It should then follow that a full list of possible treatment options is given to the patient. All of the aspects of diagnosos and treatment should be explained sufficiently to allow a patient (and his/her advisors) to make decisions about a treatment plan.
Neoplastic (new growth) cysts may appear, which are benign (noncancerous) growths. These cysts occur when cells of the ovaries not related to ovulation begin to grow abnormally.
Osteosarcoma is a malignant tumor of osteoblasts.
hepatoma
Chondrosarcomachondrosarcomachondrosarcoma
A malignant tumour means that it is a tumour which has cancer
thyroid neoplasm
Myosarcoma
lymphoma
sarcoma
Cancer is the medical term meaning malignant and invasive tumor.
Neoplasm is the medical term meaning tumor; a neoplasm can be malignant (cancerous) or benign.
A malignant tumour of epithelial origin is called a carcinoma.
malignant melanoma