Synovial sarcoma in the plantar region: A case report and literature review

Figure 1 Plain radiography of the patient’s left plantar. Both of the front view and foot oblique view show nothing abnormal in bones.

Figure 2 Doppler ultrasonography showed an inhomogeneous mass in the plantar area of the left foot.

Figure 3 Magnetic resonance imaging suggested that the lesion could be a benign tumor or tumor-like lesion, such as inflammatory granulation or a giant cell tumor in a tendon sheath.

Figure 4 Physical examination showed a swelling in the left plantar area and ecchymosis (1. 5 cm² × 1.5 cm²) in the left plantar region with accompanying tenderness.

Figure 5 Hematoxylin-eosin staining showed a sign of tumor cell type. A: Magnification is 100 times; B: Magnification is 200 times.