The common signs and symptoms of thymoma and thymic carcinoma are cough and chest pain. But, upto 50% thymomas don't show any signs or symptoms on their own.
There are different types of tumours of the thymus. Thymomas and thymic carcinomas are rare tumours of the cells that are on the outside surface of the thymus. The tumour cells in a thymoma look similar to the normal cells of the thymus, grow slowly, and rarely spread beyond the thymus.
On the other hand, the tumour cells in a thymic carcinoma look very different from the normal cells of the thymus, grow more quickly, and have usually spread to other parts of the body when the cancer is found. Thymic carcinoma is more difficult to treat than thymoma.
Symptoms of Thymoma and Thymic Carcinoma
People with thymic tumours usually do not have symptoms until the tumour is big enough to press against air passages and blood vessels in the area of the thymus, or against the ribcage or breastbone. Here are some symptoms you might have if this happens:
- If the tumour presses against the trachea (windpipe), you may have shortness of breath.
- If the tumour presses against the veins that carry blood from your head and neck to your heart, your face or arms, or both, may swell.
- You may develop pain in your chest, particularly behind your breastbone.
- Rarely, swallowing can be difficult because of a growth or bleeding into the tumour.
- Although these are some symptoms of thymus cancer, they may also be caused by other, less serious medical problems. If you have any of these symptoms, talk with your doctor.
Associated Syndromes with Thymoma and Thymic Carcinoma
You may also have symptoms that are not related to pressure caused by the tumour. These are called associated syndromes. These syndromes are usually caused by what the tumour makes (such as hormones and immune products), rather than by the tumour itself. The syndromes can appear when the tumour is in the very early stages. They are important in the early diagnosis of thymus cancer.
These are the associated syndromes linked to thymus cancer:
Myasthenia gravis: Myasthenia gravis is a chronic autoimmune neuromuscular disease characterized by varying degrees of weakness of the skeletal (voluntary) muscles of the body.
Red cell aplasia: Pure red cell aplasia (PRCA) or erythroblastopenia refers to a type of anaemia affecting the precursors to red blood cells but not to white blood cells. In PRCA, the bone marrow ceases to produce red blood cells.
Hypogammaglobulinemia: Hypogammaglobulinemia is a disorder that is caused by a lack of B-lymphocytes and a resulting low level of immunglobulins (antibodies) in the blood. Immunoglobulins play a dual role in the immune response by recognizing foreign antigens and triggering a biological response that culminates in the elimination of the antigen.
Surgical removal is the mainstay of treatment for thymoma and thymic carcinoma.
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