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<p>The Sydney lymphadenopathy cytology system was proposed in 2020, but its validation for neck ultrasound-guided fine-needle aspiration cytology remains to be explored. Patients with lymphadenopathy who underwent ultrasound and cytology were included. The final diagnosis relies on histology and consensus of the multidisciplinary team. Cytology results follow the Sydney system (L1-L5); L3-L5 categories indicate malignancy, and we further calculate sensitivity, specificity, and overall accuracy. From July 2020 to April 2023, a total of 208 patients were included, of which 68 had malignant tumors and 140 were benign cases. According to the Sydney system, the malignancy rates for L2 to L5 are 2%, 89%, 100%, and 98%, respectively. The Sydney system demonstrated 97% sensitivity, 99% specificity, and 99% accuracy in the diagnosis of neck lymphadenopathy. The study shows that the Sydney system is highly effective in reporting neck lymphadenopathy.</p>

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Utility of Sydney system for reporting the neck lymphadenopathy underwent real-time ultrasound guided fine-needle aspiration

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月21日

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  • Li-Jen Liao,
  • Chien-Hui Wu,
  • Ping-Chia Cheng,
  • Wu-Chia Lo,
  • Chih-Ming Chang,
  • Ming-Hsun Wen,
  • Wan-Lun Hsu

摘要

The Sydney lymphadenopathy cytology system was proposed in 2020, but its validation for neck ultrasound-guided fine-needle aspiration cytology remains to be explored. Patients with lymphadenopathy who underwent ultrasound and cytology were included. The final diagnosis relies on histology and consensus of the multidisciplinary team. Cytology results follow the Sydney system (L1-L5); L3-L5 categories indicate malignancy, and we further calculate sensitivity, specificity, and overall accuracy. From July 2020 to April 2023, a total of 208 patients were included, of which 68 had malignant tumors and 140 were benign cases. According to the Sydney system, the malignancy rates for L2 to L5 are 2%, 89%, 100%, and 98%, respectively. The Sydney system demonstrated 97% sensitivity, 99% specificity, and 99% accuracy in the diagnosis of neck lymphadenopathy. The study shows that the Sydney system is highly effective in reporting neck lymphadenopathy.