Review Article

Histopathologic and Radiologic Assessment of Chemotherapeutic Response in Ewing's Sarcoma: A Review

Figure 1

Fibrotic replacement of the marrow space occurred following chemotherapy. There were small foci of residual disease grossly and histologically. Overall, systematic mapping of the resection specimen is essential to measure the response to preoperative chemotherapy in the primary tumor (a). Anteroposterior view of the specimen mapped into block segments (b). This response was graded as good, with more than 90% necrosis (Grade 3, Huvos system; Grade 2, Picci system).
357424.fig.001a
(a)
357424.fig.001b
(b)