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International Journal of Breast Cancer
Volume 2015 (2015), Article ID 539842, 6 pages
http://dx.doi.org/10.1155/2015/539842
Research Article

Evaluation of Sentinel Lymph Node Dose Distribution in 3D Conformal Radiotherapy Techniques in 67 pN0 Breast Cancer Patients

1Diakonieklinikum Schwäbisch Hall, Abteilung für Strahlentherapie, Diakoniestr. 10, 74523 Schwäbisch Hall, Germany
2Klinik für Frauenheilkunde und Geburtshilfe, Universitätsklinikum Ulm, Prittwitzerstr. 43, 89075 Ulm, Germany
3Diakonieklinikum Schwäbisch Hall, Frauenklinik mit Brustzentrum und Genitalkrebszentrum, Diakoniestr. 10, 74523 Schwäbisch Hall, Germany
4Klinik für Strahlentherapie und Radioonkologie, Universitätsklinikum Ulm, Prittwitzerstr. 43, 89075 Ulm, Germany

Received 16 March 2015; Revised 9 June 2015; Accepted 17 June 2015

Academic Editor: Ian S. Fentiman

Copyright © 2015 Gerlo Witucki et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. The anatomic position of the sentinel lymph node is variable. The purpose of the following study was to assess the dose distribution delivered to the surgically marked sentinel lymph node site by 3D conformal radio therapy technique. Material and Method. We retrospectively analysed 70 radiotherapy (RT) treatment plans of consecutive primary breast cancer patients with a successful, disease-free, sentinel lymph node resection. Results. In our case series the SN clip volume received a mean dose of 40.7 Gy (min 28.8 Gy/max 47.6 Gy). Conclusion. By using surgical clip markers in combination with 3D CT images our data supports the pathway of tumouricidal doses in the SN bed. The target volume should be defined by surgical clip markers and 3D CT images to give accurate dose estimations.