Scholarlink

<p>Ewing’s sarcoma (ES) is an aggressive small round cell tumor traditionally diagnosed through open biopsy. We present a systematically evaluated case suggesting that standardized ultrasound-guided fine-needle aspiration cytology (FNAC), when combined with immunohistochemical (IHC) and molecular analysis, may provide diagnostic reliability approaching that of open biopsy. A 26-year-old female presented with an insidiously developing left popliteal fossa mass. Ultrasound-guided FNAC demonstrated characteristic small round blue cells, with IHC showing diffuse positivity for CD99, FLI-1, and Bcl-2. Subsequent fluorescence in situ hybridization (FISH) analysis identified the EWSR1 gene rearrangement. The patient exhibited significant radiographic response to neoadjuvant chemotherapy after two cycles, as evidenced by MRI. Definitive surgical resection specimens similarly demonstrated EWSR1 rearrangement by FISH, corroborating the initial diagnosis. Following four adjuvant chemotherapy cycles, the patient achieved disease-free status at the last follow-up. This case highlights the potential utility of optimized FNAC specimen triage (incorporating smears, liquid-based cytology, and cell blocks) for rare tumors, enabling comprehensive ancillary testing while maintaining diagnostic accuracy and supporting timely therapeutic decision-making.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fine-needle aspiration cytology for the diagnosis of ewing’s sarcoma in bone: a case report

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月17日

查看全文
  • Yumeng Cai,
  • Jiangang Gu,
  • Xin Wei,
  • Jun Wang,
  • Jiuyuan Fang,
  • Hongxi Zhang,
  • Ke Lv,
  • Zhilan Meng,
  • Zhiyong Liang

摘要

Ewing’s sarcoma (ES) is an aggressive small round cell tumor traditionally diagnosed through open biopsy. We present a systematically evaluated case suggesting that standardized ultrasound-guided fine-needle aspiration cytology (FNAC), when combined with immunohistochemical (IHC) and molecular analysis, may provide diagnostic reliability approaching that of open biopsy. A 26-year-old female presented with an insidiously developing left popliteal fossa mass. Ultrasound-guided FNAC demonstrated characteristic small round blue cells, with IHC showing diffuse positivity for CD99, FLI-1, and Bcl-2. Subsequent fluorescence in situ hybridization (FISH) analysis identified the EWSR1 gene rearrangement. The patient exhibited significant radiographic response to neoadjuvant chemotherapy after two cycles, as evidenced by MRI. Definitive surgical resection specimens similarly demonstrated EWSR1 rearrangement by FISH, corroborating the initial diagnosis. Following four adjuvant chemotherapy cycles, the patient achieved disease-free status at the last follow-up. This case highlights the potential utility of optimized FNAC specimen triage (incorporating smears, liquid-based cytology, and cell blocks) for rare tumors, enabling comprehensive ancillary testing while maintaining diagnostic accuracy and supporting timely therapeutic decision-making.