核素淋巴显像法术中定位乳腺癌前哨淋巴结
Zhonghua zhong liu za zhi [Chinese journal of oncology](2003)
Abstract
目的研究核素淋巴显像法术前显像和术中γ探测相结合定位活检乳腺癌前哨淋巴结(SLN)的临床应用价值.方法 42例病理穿刺活检诊断为乳腺癌、肿块直径≤5.0 cm、临床上腋淋巴结阴性的患者,术前在肿块或活检腔周围腺体内分4点注射18.5MBq/0.5ml99mTc-硫胶体(标记率>98%,胶体颗粒大小为100~200 nm),核素显像和术中γ探测仪定位活检乳腺癌SLN.所有患者行同期根治术,切除的SLN与区域清扫标本送常规病理检查.结果乳腺癌SLN核素淋巴显像检出率为88.1%,术中γ探测仪检出率为97.6%.SLN的灵敏度为93.3%(14/15),准确性为97.6%(40/41),假阴性率为6.7%(1/15),特异性为100%(26/26).结论核素淋巴显像法术前显像和术中γ探测相结合定位活检乳腺癌SLN能准确反映区域淋巴结的转移情况.改进核素显像剂品质、注射核素显像剂方式和探测方法,可提高定位活检SLN的检出率.
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Key words
sentinel lymphatic node biopsy,lymphatic mapping,lymphatic node,breast cancer,intra-operative
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