![A317158_1_En_37_Figb_HTML.jpg](/wp-content/uploads/2017/02/A317158_1_En_37_Figb_HTML.jpg)
Round- to ovoid-shaped cells, similar to Ewing sarcoma cells, organized in sheets and nests, with osteoid matrix
Selected Bibliography
Bertoni F, Present D, Bacchini P, Pignatti G, Picci P, Campanacci M (1989) The Istituto Rizzoli experience with small cell osteosarcoma. Cancer 64(12):2591–2599PubMedPubMedCrossRef
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