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Volume 6, Number 1, 2001

Lymphatic mapping and sentinel lymph node biopsy in breast cancer patients in clinical stage T1-T2 NO MO

Murawa P, Mańczak M, Wasiewicz J, Gracz A, Bręborowicz D, Malicki J.


The authors report the feasibility an accuracy of intraoperative sentinel lymphnode biopsy (SLN) in patients with operable breast cancer to test the hypothesis that the histologic characteristic of SLN predicts the histologic status of remaining lymph nodes in the axilla.

In between August 1999 and May 2000 to SLN biopsy there were 124 patients enrolled with median age of 55,2 years of age. All patients had operable breast cancer and all axillary lymphnodes were clinically negative.

A day before surgery 4 cc of Nannocol marked with Tc99 was injected subcutuanesly nearby the tumor bed and an hour later the lymphoscyntygraphy was performed to achieve axillary lymphnodes mapping. Then immediately prior to surgery Blue Dye Patent Blau V was injected in the same manner as the radiological marker. Then with the use of hand - held gamma probe the hotspot was defined and marked. Five to ten minutes later first cut was performed over marked hotspot. After visualization of stained lymph vassals the SLN was traced and confirmed with high dose output ( using the Neoprobe ) and then was harvested for histologic examination . After this all patients were submitted for regular lymphadenectomy regardless main surgery type (mastectomy or BCT).

Employing above method we were able to define SLN in 93,3%, only in 6,7% of our patients identification failed. In the group with defined SLN we found cancer cells deposits only in 20 %. And in that group remaining lymphnodes had cancer metastasis in almost 80 %. We had two cases of false negative results but still our specify rate was over 97 %.

In conclusion we think that SLN biopsy is quite safe and efficient method to evaluate axillary lymphnodes status in patients with operable early stage breast cancer. Our findings are also confirmed by other authors world wide.

Signature: Rep Pract Oncol Radiother, 2001; 6(1) : 52-52

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