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25.03.2016 | Original Article

The roles of ¹⁸F-FDG-PET/CT and US-guided FNAC in assessment of axillary nodal metastases in breast cancer patients

verfasst von: Yasuharu Nakano, Masakuni Noguchi, Miki Yokoi-Noguchi, Yukako Ohno, Emi Morioka, Takeo Kosaka, Tomoko Takahashi, Hiroshi Minato

Erschienen in: Breast Cancer | Ausgabe 1/2017

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Abstract

Background

There is a need for less invasive techniques for preoperative identification of axillary lymph node (ALN) metastases.

Method

Patients underwent ultrasonography (US) and ¹⁸F-fluorodeoxyglucose-positron emission tomography/computed tomography (¹⁸F-FDG-PET/CT), and then US-guided fine needle aspiration cytology (FNAC) and/or sentinel lymph node (SLN) biopsy were performed based on the US findings of the ALNs. Subsequently, patients with positive FNAC as well as those with positive SLN underwent axillary lymph node dissection (ALND). Postoperatively, removed SLNs and ALNs were examined histologically.

Results

Fifty (85 %) of 59 patients with positive ¹⁸F-FDG uptake in the axilla had axillary metastases, but ¹⁸F-FDG uptake results were false-positive in 9 (15 %) cases. On the other hand, 29 patients with positive FNAC underwent ALND without the need for SLN biopsy, while the remaining 20 patients with negative FNAC as well as 249 patients with negative US findings underwent SLN biopsy. Subsequently, 68 patients with positive SLN underwent ALND.

Conclusions

Positive FDG uptake in the axilla does not always indicate axillary metastasis. US-guided FNAC is useful to avoid unnecessary ALND in patients with positive ¹⁸F-FDG uptake. However, SLN biopsy is needed in patients with negative US findings of the ALNs and those with negative FNAC.

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Titel: The roles of 18F-FDG-PET/CT and US-guided FNAC in assessment of axillary nodal metastases in breast cancer patients
verfasst von: Yasuharu Nakano
Masakuni Noguchi
Miki Yokoi-Noguchi
Yukako Ohno
Emi Morioka
Takeo Kosaka
Tomoko Takahashi
Hiroshi Minato
Publikationsdatum: 25.03.2016
Verlag: Springer Japan
Erschienen in: Breast Cancer / Ausgabe 1/2017
Print ISSN: 1340-6868
Elektronische ISSN: 1880-4233
DOI: https://doi.org/10.1007/s12282-016-0684-5

Springer Medizin

The roles of ¹⁸F-FDG-PET/CT and US-guided FNAC in assessment of axillary nodal metastases in breast cancer patients