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Yolk Sac or Germ Cell Tumor

A yolk sac tumor is a rare, malignant tumor of cells that line the yolk sac of the embryo.

These cells normally become ovaries or testes; however, the tumor can also occur in areas such as the brain or chest.

The cause of a yolk sac tumor is unknown. It is most often found in children before the ages of 1 to 2.

Yolk sac tumors are also known as germ cell tumors, teratomas, or embryonal carcinoma.

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Signs and Symptoms of a Germ Cell Tumor

Diagnosis of a Germ Cell Tumor

Stages of a Germ Cell Tumor

Treatment of a Germ Cell Tumor

Long-Term Outlook

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Last Updated: 11/2013