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Germ Cell Cancer is a malignant neoplasm that originates from germ cells. With this, the neoplasm can metastasize and affect other areas of the body. Germ cells are cells that develop in the embryo which later becomes eggs and sperm in the ovaries and testes respectively.
Germ cell tumors are growths that form from reproductive cells. Tumors may be cancerous or noncancerous. Most germ cell tumors that are cancerous occur as cancer of the testicles (testicular cancer) or cancer of the ovaries (ovarian cancer). Some germ cell tumors occur in other areas of the body, such as the abdomen, brain and chest, though it's not clear why.
Nonseminomatous germ cell tumors are cancer and are found in the brain. Yolk sac tumors , (also called endodermal sinus tumors) are usually cancer. They form in the testicles and ovaries.
Germ cell tumours develop in germ cells. These are the cells in the body that develop into sperm and eggs. Germ cell tumours most often develop in the ovary or testicle because this is where most germ cells are.
Germ cell tumors start in the reproductive cells (eggs or sperm). They develop when cells that are meant to form sperm in the testicles or eggs in the ovaries travel to other parts of the body. Germ cell tumors are more common among children and young adults. They often are found in the ovaries, testes, or brain. Ovarian germ cell tumors arise from the germ cells of the ovary.
Germ cell tumors are malignant (cancerous) or nonmalignant (benign, noncancerous) tumors that are comprised mostly of germ cells. Germ cells are the cells that develop in the embryo (fetus, or unborn baby) and become the cells that make up the reproductive system in males and females.
Germ cell tumors in the testes of an adolescent male commonly present as an enlarging, solid mass, which may be painful. Within the ovaries, germ cell tumors can usually be distinguished from ovarian cysts, which are much more common, using ultrasound. Germ cell tumors can spread to lymph nodes, lung, liver, and brain.
Extragonadal germ cell tumors are made up of cells that form during the early development of a fetus (unborn baby). In a growing fetus, germ cells typically move from a site near the middle of the body to the ovaries or testes (gonads).
Leydig cell tumour, also Leydig cell tumor (US spelling), (testicular) interstitial cell tumour and (testicular) interstitial cell tumor (US spelling), is a member of the sex cord-stromal tumour group of ovarian and testicular cancers. It arises from Leydig cells. While the tumour can occur at any age, it occurs most often in young adults. A Sertoli-Leydig cell tumour is a combination of a Leydig cell tumour and a Sertoli cell tumour from Sertoli cells.
Micrograph of an ovarian clear cell carcinoma. H&E stain. Clear cell ovarian carcinoma is one of several subtypes of ovarian carcinoma. The two types of ovarian carcinoma are epithelial and nonepithelial. Within these two categories, clear-cell is a subtype of epithelial ovarian cancer. The other major subtypes within this group include high-grade serous, endometrioid, mucinous, and low-grade serous. The serous type is the most common form of epithelial ovarian tumors. Cord-stromal and germ cell belong to the nonepithelial category which are much less common. According to research, most ovarian cancers start at the epithelial layer which is the lining of the ovary. Within this epithelial group clear cell ovarian carcinoma makes up about 5-10% Clear cell became recognized as a separate category of ovarian cancer by the World Health Organization in 1973. Its incidence rate differs across various ethnic groups. Reports from the United States show that the highest rates are among Asians with 11.1 percent versus whites with 4.8 percent and blacks at 3.1 percent. These numbers are consistent with the finding that although clear cell carcinomas are rare in western countries they are much more common in parts of Asia.
An Embryonal tumor or embryoma is a mass of rapidly growing cells believed to originate in embryonic (fetal) tissue. Embryonal tumors may be benign or malignant, and include neuroblastomas and Wilms tumors. Also called embryoma. Embryomas have been defined as: "Adult neoplasms expressing one or more embryo-exclusive genes." Embryomas can appear in the lungs. It is not a precise term, and it is not commonly used in modern medical literature. Embryomas have been defined as: "Adult neoplasms expressing one or more embryo-exclusive genes".