| http://www.w3.org/ns/prov#value | - Nevoid basal cell carcinoma syndrome (Gorlin syndrome).Other risk factors for soft tissue sarcoma include the following:Past treatment with radiation therapy for certain cancers.Being exposed to certain chemicals, such as Thorotrast (thorium dioxide), vinyl chloride, or arsenic.Having swelling ( lymphedema) in the arms or legs for a long time.Possible signs of adult soft tissue sarcoma include a l
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