Polyembryoma

What is polyembryoma?

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.

Last updated on 05-01-20

How many cases of polyembryoma have been reported worldwide?

Polyembryomas are extremely rare. The exact number of cases diagnosed worldwide is unknown. One article published in 1994 stated that only 11 cases of polyembryoma of the ovaries had been reported in the medical literature.

Last updated on 05-01-20

What is the prognosis for polyembryoma?

The prognosis for individuals diagnosed with a polyembryoma is difficult to determine because of the rarity of this disease. One study of eleven women with a polyembryoma found that half died within the first year following diagnosis. The authors of this study suggest that prognosis might vary depending on the precise make-up of each tumor.

Last updated on 05-01-20

How might polyembryoma be treated?

Because polyembryomas are quite rare, there are no established guidelines for treating this condition. However, the first step for treating a polyembryoma is often surgery to remove as much of the tumor as possible. Chemotherapy, and sometimes radiation therapy, have also been used after surgery to destroy any cancer cells that may remain.

Last updated on 05-01-20


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The RareGuru disease database is regularly updated using data generously provided by GARD, the United States Genetic and Rare Disease Information Center.

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