Polyembryoma

Overview

Type of disease: Rare conditions

Polyembryoma is a type of tumor that develops from the cells of the gonads (testes in men or ovaries in women).  Such tumors are called germ cell tumors.  Polyembryomas have a distinctive look because they are composed of many parts that are shaped like embryos, one of the earliest stages of a developing human during pregnancy.   Symptoms of a polyembryoma may include an unusual bump or mass in the abdomen which can cause pain in some individuals; puberty at an unusually young age (known as precocious puberty); or irregularities in a female's menstruation.  Treatment begins with surgery and may be followed by chemotherapy and/or radiation therapy.  The cause of polyembryoma is not yet known. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.

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