乳腺癌前哨淋巴结术中印片细胞学评估

Evaluation of intraoperative touch imprint cytology of sentinel lymph node for breast cancer

目的评价印片细胞学在乳腺癌前哨淋巴结活检术中的病理诊断价值。方法选择105例早期乳腺癌患者行前哨淋巴结活检,其中成功101例。沿前哨淋巴结长轴每隔2～3 mm剖开,每个剖面均进行印片细胞学检查,印片使用HE染色,印片后的淋巴结分别送石蜡切片,将印片结果与石蜡的HE染色结果进行比对比较。结果105例患者前哨淋巴结活检的检出率为96.2%(101/ 105),101例患者中共检出202枚前哨淋巴结。在常规石蜡切片作为诊断标准时,前哨淋巴结术中印片细胞学的敏感性、特异性、准确性、阳性及阴性预测值分别为92.1%、98.8%、97.5%、94.6%和98.2%,101例患者的印片敏感性、特异性、准确性、阳性及阴性预测值分别为89.3%、98.6%、96.0%、96.2%和96.0%。将术中印片结果与进一步的连续切片结果进行比对,前哨淋巴结印片的敏感性、特异性、准确性、阳性及阴性预测值分别为83.3%、98.8%、95.5%、94.6%和95.8%,101例患者的印片敏感性、特异性、准确性、阳性及阴性预测值分别为81.3%、100.0%、94.1%、100.0%和92.0%。结论印片细胞学对乳腺癌前哨淋巴结术中病理诊断有较高的价值,可以准确提供术中诊断信息,与石蜡切片有很高的一致性。

Objective To evaluate the intraoperative touch imprint cytology as an diagnostic method of sentinel lymph node for breast cancer patient. Methods Sentinel lymph node biopsy was performed in 105 selected early breast cancer patients, and sentinel lymph node was identified in 101 （96.19%） of these patients. Axillary lymph node dissection was also performed in almost all the patients. All the sentinel lymph nodes were cut into 2-3 ram pieces along the long axis. Touch imprint was made of each piece of the sentinel lymph node, then air-dried, and finally stained with H＆E. Intraoperative touch imprint cytology results were compared with the final paraffin H＆E pathology. All sentinel nodes were cut into 4 p,m sections every 100- μm interval, and the series sections were stained with H＆E. Results 202 sentinel lymph nodes were identified in 101 breast cancer patients. The sensitivity, specificity, accuracy, positive predictive value, negative predictive value of intraoperative imprint cytology for 202 sentinel nodes was 92. 1%, 98.8%, 97.5%, 94.6% and 98.2%, respectively; which was 89.3%, 98.6%, 96.0%, 96.2% and 96.0%, respectively in the 101 patients with identified sentinel node. Compared with the series sections, the sensitivity, specificity, accuracy, positive predictive value, negative predictive value of intraoperative imprint cytology for sentinel nodes was 83.3%, 98.8%, 95.5%, 94.6% and 95.8%, respectively; and it was 81.3%, 100.0%, 94.1%, 100.0% and 92.0%, respectively in 101 patients with identified sentinel node. Conclusion Touch imprint cytology is a simple, effective and rapid method for intraoperative pathological evaluation of sentinel lymph node for breast cancer patient, which has a high concordance with the paraffin results, and can provide accurate and rapid diagnosis information for the surgeon during operation.