Fine-needle aspiration cytology for the diagnosis of ewing's sarcoma in bone: a case report. - Cai, Yumeng; Gu, Jiangang; Wei, Xin; Wang, Jun; Fang, Jiuyuan; Zhang, Hongxi; Lv, Ke; Meng, Zhilan; Liang, Zhiyong (Diagnostic Pathology, 2025)