Thymoma is a rare tumor that originates from the cells lining the outer surface of the thymus gland. The thymus, a small organ located in the upper part of the chest below the sternum, is part of the lymphatic system. It produces white blood cells known as lymphocytes to protect the body from infections. Thymomas typically develop in the front of the chest and are often discovered incidentally during chest X-rays, such as during a physical examination.
Thymoma is a slow-growing tumor that typically does not spread to lymph nodes or other parts of the body. Most children are diagnosed with thymoma at an early stage.
Other types of tumors, such as lymphoma or germ cell tumors, may form in the thymus but are not thymomas.
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People with thymoma often have one of the following immune system diseases or endocrine diseases:
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Thymoma can cause any of the following symptoms and signs. If your child has any of these, consult a pediatrician: • Cough
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In addition to thymoma, other conditions may also cause these signs and symptoms.
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The thymoma can be diagnosed and staged by the following tests:
For a description of these checks and processes, see the basic information section above
For information on the following treatments, see the treatment overview section above.
Treatment for thymoma in children may include the following:
Children with recurrent thymoma may consider participating in clinical trials to test for changes in genes in tumor samples and to target patients based on the type of gene change.
The prognosis (chance of recovery) is better when the tumour has not spread. Childhood thymoma are usually diagnosed before the tumour has spread.
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