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Malignant teratoma

Definition

Malignant teratoma is a type of cancer made of cysts that contain one or more of the three layers of cells found in a developing baby (embryo). These layers are callled ectoderms, mesoderms, and endoderms.

Alternative Names

Dermoid cyst - malignant; Nonseminomatous germ cell tumor - teratoma; Immature teratoma

Causes, incidence, and risk factors

Malignant teratoma occurs most often in young men in their 20s - 30s. It is often located in the chest area. Most malignant teratomas can spread throughout the body, and have spread by the time of diagnosis.

A number of other cancers are often associated with these tumors, including:

  • Acute myelogenous leukemia (AML)
  • Embryonal rhabdomyosarcoma
  • Malignant histiocytosis
  • Myelodysplasia (MDS)
  • Small cell undifferentiated carcinoma

Symptoms

Symptoms include:

  • Chest pain or pressure
  • Cough
  • Fatigue
  • Limited ability to tolerate exercise
  • Shortness of breath

Signs and tests

The health care provider will perform a physical exam, which may reveal signs of congestive heart failure and increased pressure in the chest area.

The following tests help diagnose the tumor:

Treatment

Chemotherapy is used to treat the tumor. A combination of medicines (usually cisplatin, etoposide, and bleomycin) is commonly used.

After chemotherapy is complete, CT scans are taken again to see if any mass remains. Surgery may be recommended if there is a possibility that the cancer will grow back in that area.

Support Groups

There are many support groups available for people with cancer. Contact the American Cancer Society -- www.cancer.org

Expectations (prognosis)

The outlook depends on the tumor size and location and the age of the patient.

Complications

The cancer can spread throughout the body and there may be complications of surgery or related to chemotherapy.

Calling your health care provider

Call your health care provider if you have symptoms of malignant teratoma.

References

Celli BR. Diseases of the diaphragm, chest wall, pleura, and mediastinum. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 100.


Review Date: 9/26/2010
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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