Not all soft tissue masses require surgery, and removal of a known benign tumor can be safely delayed. Immediate medical attentionĪ newly found soft tissue mass is rarely an emergent condition. The masses – benign or cancerous – come to clinical attention more quickly when they are located in the arms and legs, as opposed to the chest or abdomen, because less room exists in arms and legs for such masses to be mistaken for other bodily structures.
Cancerous masses are more likely to grow rapidly, and to have fingerlets or satellite lesions around them.Īccording to the National Cancer Institute, about 43 percent of sarcomas occur in arms and legs 34 percent occur in and around internal organs 10 percent occur in the chest and back region and 13 percent occur in other locations. Sarcomas (cancerous growths) more often are painless.
Benign tumors also tend to grow more slowly, and many are smaller than 5 cm (2 inches) at their longest point. Benign masses are more likely to be painful to the touch, such as with an abscess. Masses greater than 5 cm (2 inches) carry the highest risk of being malignant and merit a medical evaluation. Generally these growths are roughly round in shape, but they also can be or elliptical or elongated like a sausage. Benign masses are thought to occur 10 times more frequently than cancerous growths (referred to medically as sarcomas). Soft tissue tumors can be cancerous or benign.
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