Radiotracer technique optimization for breast cancer internal mammary sentinel lymph node biopsy

Baowei DUAN; Na ZHAO; Zhao BI; Pengfei QIU; Xinghe XU; Yuguang CHEN; Qingda FAN; Yongsheng WANG

doi:10.19401/j.cnki.1007-3639.2023.02.006

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Radiotracer technique optimization for breast cancer internal mammary sentinel lymph node biopsy

Specialists' Article | 更新时间：2025-12-31

- Radiotracer technique optimization for breast cancer internal mammary sentinel lymph node biopsy
- China Oncology Vol. 33, Issue 2, Pages: 134-141(2023)
- 作者机构：
  
  1. 山东第一医科大学（山东省医学科学院）研究生部，山东济南 250118
  2. 山东省肿瘤防治研究院（山东省肿瘤医院）乳腺病中心，山东第一医科大学（山东省医学科学院），山东济南 250117
  3. 泰安市肿瘤防治院乳腺外科，山东泰安 271000
  4. 泰安市妇幼保健院儿科，山东泰安 271000
- 作者简介：
- 基金信息：
- DOI：10.19401/j.cnki.1007-3639.2023.02.006
  CLC： R737.9
- Received：15 November 2022，
  
  Revised：2023-02-08，
  
  Published：28 February 2023
- 稿件说明：
移动端阅览
Baowei DUAN, Na ZHAO, Zhao BI, et al. Radiotracer technique optimization for breast cancer internal mammary sentinel lymph node biopsy[J]. China Oncology, 2023, 33(2): 134-141.
DOI：

Baowei DUAN, Na ZHAO, Zhao BI, et al. Radiotracer technique optimization for breast cancer internal mammary sentinel lymph node biopsy[J]. China Oncology, 2023, 33(2): 134-141. DOI： 10.19401/j.cnki.1007-3639.2023.02.006.

摘要

背景与目的：

山东省肿瘤防治研究院（山东省肿瘤医院）乳腺病中心前期研发新型核素示踪技术，显著提高了内乳前哨淋巴结（internal mammary sentinel lymph node，IMSLN）显像率，但该技术获得的IMSLN显像率相较于腋窝前哨淋巴结（axillary sentinel lymph node，ASLN）仍然存在一定差距。本研究旨在通过优化新型核素示踪技术，进一步提高IMSLN显像率，推动内乳前哨淋巴结活检（internal mammary sentinel lymph node biopsy，IM-SLNB）广泛应用。

方法：

前瞻性入组159例原发性乳腺癌患者，分为优化核素示踪技术组（

= 81，A组）和新型核素示踪技术组（

= 78，B组）。A组在超声引导下将

99m

Tc-硫胶体平均注射在腺体最丰富的3个区域腺体实质内（总放射强度1.0 ~ 1.3 mCi；0.8 ~ 1.0 mL/点）。B组在超声引导下将

99m

Tc-硫胶体平均注射在乳腺6点和12点腺体实质内（总放射强度1.0 ~ 1.3 mCi；0.8 ~ 1.0 mL/点）。术前进行单光子发射计算机断层扫描（single photon emission computed tomography，SPECT）/计算机体层成像（computed tomography，CT）淋巴显像，术中γ探测仪探测前哨淋巴结。比较两组患者IMSLN及ASLN显像率的差异，同时分析可能影响IMSLN显像率的因素。

结果：

术前SPECT/CT IMSLN显像率在两组间差异无统计学意义（

= 0.806）。术中IMSLN显像率A组显著高于B组（87.65%

70.51%，

= 0.008）。亚组分析显示，A组年龄≤50岁和

50岁患者术中IMSLN显像率分别为92.31% 和 83.33%（

= 0.315），B组年龄≤50岁患者术中IMSLN显像率显著高于

50岁患者（81.58%

60.00%，

= 0.037）。A组IMSLN的中位体外放射性计数显著高于B组（160.50

59.00，

= 0.005）。

结论：

优化核素示踪技术能有效地增加核素内乳区淋巴引流及摄取，可在不影响ASLN显像率的同时显著提高IMSLN显像率，有利于IM-SLNB推广应用。

Abstract

Background and purpose:

The modified injection technique developed in Shandong Cancer Hospital and Institute

Shandong First Medical University and Shandong Academy of Medical Sciences has significantly improved the visualization rate of internal mammary sentinel lymph nodes (IMSLN)

however there is still a gap between the visualization rate of IMSLN obtained by this technique and that of axillary sentinel lymph nodes (ASLN). The study aimed to further improve the IMSLN visualization rate and promote the widespread use of internal mammary sentinel lymph node biopsy (IM-SLNB) by optimizing the modified injection technique.

Methods:

A total of 159 patients with primary breast cancer were enrolled in a prospective group and divided into the optimized radiotracer technique group (group A

=81) and the modified injection technique group (group B

=78). In group A

99m

Tc-sulfur colloid was injected averagely into parenchyma in the gland's three most abundant regions under ultrasound guidance (total radioactive intensity 1.0-1.3 mCi; 0.8-1.0 mL/point). In group B

99mTc-sulfur colloid was injected averagely into the parenchyma of the breast at 6 and 12 points under ultrasound guidance (total radioactive intensity 1.0-1.3 mCi; 0.8-1.0 mL/point). Single photon emission computed tomography (SPECT)/computed tomography (CT) lymphoscintigraphy was performed preoperatively

and the sentinel lymph nodes were detected intraoperatively by γ probe. In this study

we evaluated the differences in IMSLN and ASLN visualization rates between the groups

and also analyzed the factors that may affect the IMSLN visualization rate.

Results:

There was no statistically significant difference in visualization rate of IM-SLN measured by preoperative SPECT/CT between the two groups (

=0.806). The intraoperative visualization rate of IM-SLN was significantly higher in group A than in group B (87.65%

70.51%

=0.008). Analysis of

subgroups showed that the intraoperative visualization rate of IMSLN was 92.31% and 83.33% (

=0.315) in group A patients aged ≤50 years and

50 years

respectively

and the intraoperative visualization rate of IMSLN was significantly higher in group B patients aged ≤50 years than in patients aged

50 years (81.58%

60.00%

=0.037). The median in vitro radioactivity count of IMSLN was significantly higher in group A than in group B (160.50

59.00

=0.005).

Conclusion:

The optimized radiotracer technique can effectively increase the lymphatic drainage and uptake in the internal mammary region of the radiotracer

which can significantly improve the visualization rate of IM-SLN without affecting the visualization rate of ASLN

and is conducive to the promotion and application of IM-SLNB.

关键词

Keywords

references

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