System describing surgical field extension associated with flap reconstruction after resection of a superficial malignant soft tissue tumor

Figure 3 Undifferentiated pleomorphic sarcoma at the buttock reconstructed by a transpositional flap (transpositional flap, C0D0). A: A 65-year-old female with an undifferentiated pleomorphic sarcoma at the buttock. Magnetic resonance imaging revealed a subcutaneous tumor. The tumor had a cystic appearance and contained liquid with slightly high signal intensity on the T2-weighted image. The periphery of the cystic wall was thick with a solid neoplastic lesion and intermediate signal intensity on T2-weighted images (A-I). Computed tomography showed that the lesion is located at the buttock (A-II); B: A resection of the tumor was designed; C and D: The tumor was resected and the defect was reconstructed with a transpositional flap donated from the lateral abdomen. The CD-grade was C0D0 (transpositional flap, C0D0).