A<unk>  (from the Greek 'sarx' meaning "flesh") is a cancer of the connective or supportive tissue (bone, cartilage, fat, muscle, blood vessels) and soft tissue.  This is in contrast to carcinomas, which are of epithelial origin (breast, colon, pancreas, and others). It can be classified based on the tissue involved and the histology of the lesion. Soft tissue<unk>  needs to differentiated from soft tissue benign tumors such as Adenoma, lipoma, and fibroma. The estimated incidence of soft tissue<unk>  worldwide is 1.8 to 5 per 100,000 per year. Soft tissue<unk> s are more commonly found in older patients (>50 years old). Risk factors include radiation exposure, damaged lymphatic system, and inherited conditions. There is insufficient evidence to recommend routine screening for<unk> . If left untreated,<unk>  can lead to complications of local tissue erosion, compression and invasion. Complications can also include side effects of chemotherapy and radiation therapy. Prognosis depends upon the size and stage of the tumor, age and general health of the patient, and benign/malignant nature of the tumor.<unk>  can be diagnosed by combination of imaging and biopsy. Symptoms include painless swelling or lump, menstrual irregularities, constipation, and indigestion. Chemotherapy may be used with radiation therapy either before or after surgery to try to shrink the tumor or kill any remaining cancer cells. Surgery is the most common treatment for soft tissue<unk> s. It is important to obtain a margin free of tumor to decrease the likelihood of local recurrence and give the best chance for eradication of the tumor. Radiation therapy (treatment with x-rays or radioactive implants) may be used either before surgery to shrink tumors or after surgery to kill any cancer cells that may have been left behind. There are no established measures for the primary and secondary prevention of<unk> .
Sarcoma
Angiosarcoma
Soft tissue sarcoma
Xanthoma
Epithelioma
Liposarcoma
Noma
Oncocytoma