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Erschienen in: Annals of Surgical Oncology 12/2011

01.11.2011 | Breast Oncology

SPIO-Enhanced Magnetic Resonance Imaging for the Detection of Metastases in Sentinel Nodes Localized by Computed Tomography Lymphography in Patients with Breast Cancer

verfasst von: MD, PhD Kazuyoshi Motomura, MD, PhD Makoto Ishitobi, MD, PhD Yoshifumi Komoike, MD, PhD Hiroki Koyama, RT Atsushi Noguchi, RT Hiroshi Sumino, RT Youji Kumatani, MD, PhD Hideo Inaji, RT Takashi Horinouchi, MD, PhD Katsuyuki Nakanishi

Erschienen in: Annals of Surgical Oncology | Ausgabe 12/2011

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Abstract

Background

Superparamagnetic nanoparticle-enhanced magnetic resonance (MR) imaging has been reported to be a promising improvement for diagnostic imaging of lymph node metastases from various tumors. Moreover, sentinel nodes have been reported to be well identified using computed tomography (CT) lymphography (CT-LG) in patients with breast cancer. The aim of this study was to evaluate MR imaging with superparamagnetic iron oxide (SPIO) enhancement for the detection of metastases in sentinel nodes localized by CT-LG in patients with breast cancer.

Methods

This study included 102 patients with breast cancer and clinically negative nodes. Sentinel nodes were identified by CT-LG, and SPIO-enhanced MR imaging of the axilla was performed to detect metastases in the sentinel nodes. A node was considered nonmetastatic if it showed a homogenous low signal intensity and metastatic if the entire node or a focal area did not show low signal intensity on MR imaging. Sentinel node biopsy was performed, and imaging results were correlated with histopathologic findings.

Results

The mean number of sentinel nodes identified by CT-LG was 1.1 (range, 1–3). The sensitivity, specificity, and accuracy of MR imaging for the diagnosis of sentinel node metastases were 84.0%, 90.9%, and 89.2%, respectively. In 4 of 10 patients with micrometastases, metastases were not detected, but all 15 patients with macrometastases were successfully identified.

Conclusions

SPIO-enhanced MR imaging is a useful method of detecting metastases in sentinel nodes localized by CT-LG in patients with breast cancer and may avoid sentinel node biopsy when the sentinel node is diagnosed as disease-free.
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Metadaten
Titel
SPIO-Enhanced Magnetic Resonance Imaging for the Detection of Metastases in Sentinel Nodes Localized by Computed Tomography Lymphography in Patients with Breast Cancer
verfasst von
MD, PhD Kazuyoshi Motomura
MD, PhD Makoto Ishitobi
MD, PhD Yoshifumi Komoike
MD, PhD Hiroki Koyama
RT Atsushi Noguchi
RT Hiroshi Sumino
RT Youji Kumatani
MD, PhD Hideo Inaji
RT Takashi Horinouchi
MD, PhD Katsuyuki Nakanishi
Publikationsdatum
01.11.2011
Verlag
Springer-Verlag
Erschienen in
Annals of Surgical Oncology / Ausgabe 12/2011
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-011-1710-7

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