Validation of online calculators to predict the non-sentinel lymph node status in sentinel lymph node-positive breast cancer patients.

Autor: Tanaka, Satoru, Sato, Nayuko, Fujioka, Hiroya, Takahashi, Yuko, Kimura, Kosei, Iwamoto, Mitsuhiko
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Zdroj: Surgery Today; Feb2013, Vol. 43 Issue 2, p163-170, 8p
Abstrakt: Purpose: This study evaluated and compared the predictive values of the Memorial Sloan-Kettering Cancer Center (MSKCC) nomogram and the Stanford nomogram for predicting non-sentinel lymph node (SLN) metastasis in patients with SLN metastasis, which were the only nomograms available online, and verified their usefulness in the macrometastasis or micrometastasis/isolated tumor cell (ITC) subgroups. Methods: Eighty-nine patients with a positive SLN biopsy who underwent axillary lymph node dissection were analyzed. The predicted probability of non-SLN metastasis was calculated using a computerized model from the websites for each nomogram. The results were compared using the area under the curve (AUC) of the receiver operating characteristics curve for each model. The false-negative and false-positive rates were also calculated. Results: The AUC for the entire population was 0.701 with the MSKCC nomogram and 0.756 with the Stanford nomogram. The AUCs of macrometastasis and micrometastasis/ITC groups were 0.680 and 0.469 with the MSKCC nomogram, and were 0.676 and 0.574 with the Stanford nomogram, respectively. Although false-negative cases were not identified, the false-positive rates were high in both subgroups when using these nomograms. Conclusions: This independent comparison found no significant difference between the two nomograms. In this study, these nomograms could not reliably predict positive non-SLN in patients with SLN micrometastasis/ITC. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index