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  • Title: Intra-operative evaluation of the sentinel lymph node for T1-N0 breast-cancer patients: always or never? A risk/benefit and cost/benefit analysis.
    Author: Canavese G, Bruzzi P, Catturich A, Vecchio C, Tomei D, Carli F, Truini M, Andreoli GB, Priano V, Dozin B.
    Journal: Eur J Surg Oncol; 2010 Aug; 36(8):737-44. PubMed ID: 20598494.
    Abstract:
    AIM: To investigate whether omitting intra-operative staging of the sentinel lymph node (SLN) in T1-N0 breast-cancer patients is feasible and convenient because it could allow a more efficient management of human and logistic resources without leading to an unacceptable increase in the rate of delayed axillary lymph node dissection (ALND). METHODS: According to the experimental procedure, T1a-T1b-patients were to not receive any intra-operative SLN evaluation on frozen sections (FS). In all T1c-patients, the SLN was macroscopically examined; if the node appeared clearly free of disease, no further intra-operative assessment was performed; if the node was clearly metastatic or presented a dubious aspect, the pathologist proceeded with analysis on FS. T2-patients, enrolled in the study as reference group, were treated according to the institutional standard procedure; they all received SLN staging on FS. RESULTS: The study included 395 T1-N0-patients. Among the 118 T1a-T1b-patients whose SLN was not analyzed at surgery, 12 (10.2%) were recalled for ALND. In the group of 258 T1c-patients, 112 received SLN analysis on FS and 146 did not. An SLN falsely negative either at macroscopic or FS examination was found in 33 (12.8%) cases. Overall, the rate of recall for ALND was 11.6% as compared to 8.4% in T2-patients. Using the experimental protocol, the institution reached a 9.6% cost saving, as compared to the standard procedure. CONCLUSIONS: Omission of SLN intra-operative staging in T1-N0-patients is rather safe. It provides the institution with both management and economical advantages.
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