1. Instructional Course Lectures, The American Academy of Orthopaedic Surgeons - New Developments in the Staging and Imaging of Soft-Tissue Sarcomas*† by EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am Volume 81(6):882-92 June 1, 1999 ©1999 by The Journal of Bone and Joint Surgery, Inc.

2. Fig. 1 Schematic diagram showing the life cycle of a tumor. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

3. Fig. 2 Life-table survival curves for patients who had a soft-tissue sarcoma, stratified according to the 1997 modified staging system of the American Joint Committee on Cancer. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

4. Figs. 3-A, 3-B, and 3-C: A forty-two-year-old man who had a soft-tissue sarcoma of the forearm. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

5. Fig. 3-B: Axial T2-weighted magnetic resonance image showing the lesion (arrows). EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

6. Fig. 3-C: Sagittal T1-weighted magnetic resonance image clearly showing the location of the tumor (arrows) to be superficial despite its large size. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

7. Fig. 4 Axial T2-weighted magnetic resonance image of a low-grade fibrosarcoma (arrows) extending into the anterior and medial compartments of the thigh. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

8. Figs. 5-A, 5-B, and 5-C: A sixty-four-year-old woman who had a high-grade undifferentiated sarcoma of the forearm. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

9. Fig. 5-B Axial (Fig. 5-B) and coronal (Fig. 5-C) T1-weighted magnetic resonance images showing regions of varying signal intensity in the tumor (arrow), representing areas of necrosis. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

10. Fig. 5-C Axial (Fig. 5-B) and coronal (Fig. 5-C) T1-weighted magnetic resonance images showing regions of varying signal intensity in the tumor (arrow), representing areas of necrosis. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

11. Figs. 6-A and 6-B: An intramuscular hemangioma of the lower extremity. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

12. Fig. 6-B Coronal T2-weighted magnetic resonance image showing the grapelike appearance of the clusters of venous sacs (arrows). EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

13. Fig. 7 Sagittal T1-weighted magnetic resonance image showing a fibromatosis (large arrows) of the antecubital fossa. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

14. Figs. 8-A and 8-B: Pigmented villonodular synovitis of the knee. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

15. Fig. 8-B Intraoperative photograph of the distal part of the femur and knee, seen through an anterior quadriceps-splitting knee incision, showing darkly stained pigmented tissue (P) due to hemosiderin deposition. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

16. Figs. 9-A and 9-B: A schwannoma of the distal aspect of the leg. EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.

17. Fig. 9-B Intraoperative photograph showing the lesion (at the end of the forceps) after excision from the tibial nerve (above the end of the clamp). EDWARD Y. CHENG, and ROBY C. THOMPSON J Bone Joint Surg Am 1999;81:882-92 ©1999 by The Journal of Bone and Joint Surgery, Inc.