Breast Cancer

, Volume 21, Issue 4, pp 394–401

Magnetic resonance lymphography of sentinel lymph nodes in patients with breast cancer using superparamagnetic iron oxide: a feasibility study

Authors

    • Department of SurgeryOyama Municipal Hospital
    • Department of SurgeryJichi Medical University
  • Shigeru Kobayashi
    • Department of RadiologyJichi Medical University
  • Yugo Sato
    • Department of RadiologyJichi Medical University
  • Hiroyuki Maeshima
    • Department of RadiologyOyama Municipal Hospital
  • Yasuo Hozumi
    • Department of SurgeryJichi Medical University
  • Alan T. Lefor
    • Department of SurgeryJichi Medical University
  • Katsumi Kurihara
    • Department of SurgeryOyama Municipal Hospital
  • Naohiro Sata
    • Department of SurgeryJichi Medical University
  • Yoshikazu Yasuda
    • Department of SurgeryJichi Medical University
Original Article

DOI: 10.1007/s12282-012-0401-y

Cite this article as:
Shiozawa, M., Kobayashi, S., Sato, Y. et al. Breast Cancer (2014) 21: 394. doi:10.1007/s12282-012-0401-y

Abstract

Background

The sentinel lymph node (SLN) biopsy technique using superparamagnetic iron oxide (SPIO) as a tracer instead of radioisotopes has been described. To further advance this technique, we evaluated preoperative SPIO-MR sentinel lymphography to facilitate the accurate identification of the lymphatic pathways and primary SLN.

Methods

A prospective study was performed in ten patients with breast cancer and clinically negative axillary lymph nodes. None of the patients received preoperative chemotherapy. After 1.6 ml of SPIO (ferucarbotran) was injected in the subareolar breast tissue, sentinel axillary lymph nodes were detected by MRI in T2*-weighted gradient echo images and resected using the serial SPIO-SLN biopsy procedure with a handheld magnetometer.

Results

In one patient, gadolinium-enhanced MR imaging was performed at the same time as SPIO-MR lymphography, and this patient was excluded from further analysis. In all patients (9/9) SLNs were detected by SPIO-MR sentinel lymphography and successfully identified at surgery. The number of SLNs detected by lymphography (mean 2.7) significantly correlated with SLNs identified at surgery (mean 2.2). One patient had nodal metastases. In one patient, skin color changed to brown at the injection site and resolved spontaneously. There were no severe reactions to the procedure or complications in any patient.

Conclusions

This is the first study to evaluate SPIO both as a contrast material in MR sentinel lymphography and as a tracer in SLN biopsy using an integrated method. The acquired three-dimensional imaging demonstrated excellent image quality and usefulness to identify SLN in conjunction with SLN biopsy.

Keywords

Breast cancerSentinel lymph node biopsySuperparamagnetic iron oxideMR lymphography

Copyright information

© The Japanese Breast Cancer Society 2012