A case of Extraskeletal Ewing's sarcoma arising from the right chest wall

Abstract

We report a case of Extraskeletal Ewing's sarcoma arising in the right chest wall. An I8-year-old female was admitted to our hospital with right chest pain. Fine needle aspiration cytology revealed loose clusters of cells and isolated small round cells with a few nucleoluis. The case lacked formation of Homer-Wright type rosettes, and a peritheliomatous pattern was prominent. The tumor cells immunohistochemically expressed NSE and MIC 2 (0 13, 12 E 7), and the tumor was considered to belong to the Ewing/PNET family.