Germ cell tumours are ovarian neoplasms derived from germ cells. They account for 30% of ovarian tumours, but only 1 to 3% of ovarian carcinomas in North America. However, in patients under the age of 21, 60% of ovarian tumours are of the germ cell type, and up to one-third are malignant.
The general approach to histologic classification is the same as for the testis. In the ovary, most malignant germ cell tumours are pure, and only 10% are mixed.
Germcelltumors are tumors that begin in cells that, in a developing fetus, become sperm or egg cells.
Germcelltumors are a diverse group of tumors that all begin in germcells, the cells in the developing fetus that become sperm or egg cells.
Germcelltumors are divided into two types: germinomas, which contain only immature germcells; and embryonic tumors, which contain some cells that have started to develop into other tissues (as would happen in normal development of a fetus).
Germcelltumors are neoplasms derived from germcells.
In younger women germcell lesions are more common, thus in patients under the age of 21, 60% of ovarian tumours are of the germcell type, and up to one-third are malignant.
In males, germcell tumours occur typically after puberty and are malignant (testicular cancer).
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