1. Calcifying Fibrous Pseudotumor. A Case Report* by HIROSHI ORUI, MITSUNORI YAMAKAWA, AKIRA ISHIKAWA, and TOSHIHIKO OGINO J Bone Joint Surg Am Volume 80(4):555-60 April 1, 1998 ©1998 by The Journal of Bone and Joint Surgery, Inc.

2. Figs. 1-A and 1-B: Diagnostic images demonstrating the lesion, which was located in the left shoulder girdle. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

3. Fig. 1-B: Computerized tomography scan showing a mass (arrowheads) with the same density as muscle. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

4. Figs. 2-A, 2-B, and 2-C: Magnetic resonance images demonstrating a lobular mass (arrowheads) between the deltoid and the lateral head of the triceps. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

5. Fig. 2-B: On T2-weighted images, the mass demonstrated low signal intensity with irregularly scattered areas of high signal intensity. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

6. Fig. 2-C: On T1-weighted images that were enhanced with gadolinium-diethylenetriamine pentaacetic acid, the mass was characterized by high signal intensity with irregular focal areas of low signal intensity. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

7. Figs. 3-A and 3-B: Photomicrographs demonstrating the histological appearance of the mass. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

8. Fig. 3-B: The collagen bundles often were wrinkled like those of a desmoid tumor (hematoxylin and eosin, x 80). HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

9. Figs. 4-A, 4-B, and 4-C: Histological and ultrastructural studies of calcification. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

10. Fig. 4-B: Photomicrograph showing laminated psammomatous calcification (arrow) (hematoxylin and eosin, x 160). HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

11. Fig. 4-C. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

12. Figs. 5-A, 5-B, and 5-C: Photomicrographs of sections of the lesion, demonstrating evidence of circulatory disturbances. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

13. Fig. 5-B. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.

14. Fig. 5-C. HIROSHI ORUI et al. J Bone Joint Surg Am 1998;80:555-60 ©1998 by The Journal of Bone and Joint Surgery, Inc.