Resumen

VICTOR ACOSTA, F et al. Cáncer de Mama Ganglio centinela positivo, ¿Sempre necesario una disección axilar?. Rev. venez. oncol. [online]. 2008, vol.20, n.3, pp.118-122. ISSN 0798-0582.

The objective of this work is to evaluate the elements which may have an influence over the patients with breast cancer after a positive sentinel node biopsy, in the presence of metastatic axillaries nodes found in an axillaries dissection. METHODS: We realized 242 sentinels’ node biopsies and were carried out by a combined technique of radioisotope and coloring. A positive sentinel node for metastasis was found in 48 of them (19.8 %). In 44 of these patients’ particular cases (91.6 %), an axillaries dissection was performed. RESULTS: In the group with axillaries lesions and positive sentinel node, 76.9 % of the patients had palpable lesions. Also, observed 77 % of the lesions were poor or median differentiated, in 92.4 % were nuclear grade II and III lesions. The only statistically significant difference was that lymph-vascular embolism, it was found in 61.6 % of the cases. CONCLUSIONS: On a significant number of sentinel node positive patients, the axillaries dissection won’t show metastasis. Some elements are known to us, which may have an influence over the axillaries positivity after a positive sentinel lymph node biopsy. Of these elements, only the lymph-vascular embolism was statistically significant.

Palabras clave : Cancer; breast; node; positive; dissection.