The tests that need to be performed for the review of bulging dermatofibrosarcoma include magnetic resonance imaging, ultrasound, CT scan, and histopathology, to name a few. Fibrosarcoma of the skin is a kind of low-grade malignant fibroblastic tumor that occurs in the dermis. If the disease is not treated regularly, metastasis is very likely to occur, so it needs to be examined regularly. 1. Magnetic resonance examination is mainly used to determine whether the boundary of fibrosarcoma is clear and the degree of tumor invasion. 2. Ultrasonography is mainly used to determine whether the boundary between fibrosarcoma and skin is clear or not, and at the same time to understand the surrounding blood supply, whether there is any lymph node enlargement in the periphery, etc. 3. 3. CT examination is mainly to know whether the fibrosarcoma has invaded the bones or metastasized to the lungs, brain and other organs. 4. Pathologic and histologic examination is mainly used to clarify the diagnosis of bulging cutaneous fibrosarcoma. 5. General physical examination can observe the appearance and characteristics of fibrosarcoma, and understand the volume and size changes as well as morphological changes of fibrosarcoma. The treatment of bulging dermatofibrosarcoma is mainly based on surgery, and patients should undergo standardized treatment as early as possible under the guidance of doctors.