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  • Title: Sentinel lymph node localization in early breast cancer.
    Author: Gulec SA, Moffat FL, Carroll RG, Serafini AN, Sfakianakis GN, Allen L, Boggs J, Escobedo D, Pruett CS, Gupta A, Livingstone AS, Krag DN.
    Journal: J Nucl Med; 1998 Aug; 39(8):1388-93. PubMed ID: 9708514.
    Abstract:
    METHODS: Thirty-two patients with clinical node-negative breast cancer underwent sentinel node localization study as part of a National Cancer Institute-sponsored multicenter trial. Anatomical and histopathologic characteristics of sentinel lymph node (SLN) and a kinetic analysis of nodal uptake were studied. Patients were injected with 1 mCi/4 ml unfiltered 99mTc-sulfur colloid in four divided doses around the palpable lesion or immediately adjacent to the excision cavity if prior biopsy was performed. SLN biopsy was performed 1.5-6 hr (mean = 3 hr) postinjection. Intraoperative localization was performed using a gamma probe. All patients underwent complete axillary dissection. RESULTS: SLN was identified in 30 of 32 (94%) patients. There were no false-negative SLN biopsies. CONCLUSION: This study supports the clinical validity of SLN biopsy in breast cancer and confirms that, unlike the blue dye technique, the learning curve with unfiltered 99mTc-sulfur colloid and the gamma detection probe is short, and SLN localization is achievable in over 90% of cases by surgeons with modest experience. The use of unfiltered 99mTc-sulfur colloid (larger particle size) with larger injected volume permits effective localization of SLNs.
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