summary Fibrosarcoma of Soft tissue is a malignant fibrogenic tumor that occurs in patients between 55-80 years of age. Diagnosis is made with a biopsy showing spindle-shaped cells with scant cytoplasm and indistinct borders with tissue that is organized in herringbone fashion. Treatment is usually wide local resection with radiation Symptoms Presentation usually and enlarging painless mass usually symptoms develop after mass reaches ten cm Imaging Radiograph are usually normal MRI shows deep seated inhomogeneous mass Histology Classic characteristics are fasiculated growth pattern spindle-shaped cells with scant cytoplasm and indistinct borders cells separated by interwoven collagen fibers tissue may be organized in herringbone fashion Treatment Operative wide local resection with perioperative radiation indications most cases radiation add radiation if tumor is > 5 cm (5000 cGy before resection and 2000 cGy after resection) local adjuvant treatment may do local adjuvant treatment with phenol or cryotherapy