Signs of a benign soft tissue tumor vary widely. If they are close to the surface of the body, they may appear as a lump. Some cause pain; others don't. They vary widely in how they look as well. If you have pain or if the tumor grows, you should see a doctor.
Common benign soft tissue tumors include:
- Lipomas, benign tumors composed of fatty tissue
- Benign fibrous histiocytoma
- Hemangiomas, noncancerous tumors that are formed by a mass of blood cells. The tumor rarely become malignant, and can be successfully excised. They often result from trauma to the affected part.
- Giant cell tumors of tendon sheath, and
Some conditions, like nodular fasciitis and pigmented villonodular synovitis, are not tumors, but may need similar treatment.
Causes and Risk Factors
A few of these tumors may be related to a genetic condition.