Image 21 of 24



Image Description

References:
1. Soft Tissue and Bone Tumors. WHO Classification of Tumors. 5th Edition, 2020.
2. Goldblum, J. R., Weiss, S. W., & Folpe, A. L. (2020). Enzinger & Weiss's Soft Tissue Tumors - 7th Edition. Philadelphia, PA. Elsevier.
3. Unni KK & Inwards CY (2010). Dahlin's Bone Tumors. 6th Edition. Wolters Kluwer/Lippincott.
4. Bullough PG (2004). Orthopedic Pathology. 4th Edition. Mosby.
5. Walczak BE, Johnson CN, Howe BM. Review Article - Myositis Ossificans. J Am Acad Orthop Surg 2015;23:612-622.

About this image: Innermost zone of a lesion of myositis ossificans showing immature-appearing, fibroblastic/myofibroblastic proliferation in a background of vascular collagenized stroma. Extravasated red blood cells as well as hemosiderin-laden macrophages are also present.

Image 21 of 24