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THE QUARTERLY JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING

Rivista di Medicina Nucleare e Imaging Molecolare


A Journal on Nuclear Medicine and Molecular Imaging
Affiliated to the Society of Radiopharmaceutical Sciences and to the International Research Group of Immunoscintigraphy
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The Quarterly Journal of Nuclear Medicine and Molecular Imaging 2005 September;49(3):245-51

Copyright © 2009 EDIZIONI MINERVA MEDICA

lingua: Inglese

Lymphoscintigraphy with intraoperative gamma probe sentinel node detection: clinical impact in patients with head and neck melanomas

Maccauro M. 1, Villano C. 1, Aliberti G. 1, Ferrari L. 1, Castellani M. R. 1, Patuzzo R. 2, Tshering D. 3, Santinami M. 2, Bombardieri E. 1

1 Nuclear Medicine Division Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy 2 Division of Surgical Oncology Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy 3 Division of Pathology Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy


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Aim. The aims of this paper were to evaluate the clinical relevance of lymphoscintigraphy with intraoperative gamma-probe detection in identifying sentinel nodes (SNs) and to study the prognostic value of SN biopsy in head and neck melanoma patients.
Methods. Sixty-one patients had lymphoscintigraphy with intradermal injections of 99mTc-Nanocoll® (40 MBq), 24 h before surgery. Tumor-positive SNs patients underwent total lymph node dissection Postoperative histological examination was performed. Patients were followed up for 1 to 5 years (median 3 years). The tumor relapses and the overall survival were evaluated by means of statistical methods.
Results. Lymphoscintigraphy showed lymphatic distribution to more than one basin in 45 patients (74%), in 15 patients one basin was visualized and no basin in 1 patient. In 41 patients the SN was negative for metastases, while in 20 was positive. In a high percentage of patients (30%), metastatic involvement occurred in more than one lymph node basin. During follow-up in the negative SN group, 40 patients remained disease free and 1 relapsed. In the positive SN group, 10 patients remained disease free and 10 relapsed. Recurrence time ranged from 6 to 11 months. The overall survival of the SNs negative group was significantly higher than the positive SN group.
Conclusion. This approach was able to distinguish: a) patients with tumor-negative SNs with a favorable clinical course (98% did not relapse, P<0.001); b) patients with tumor-positive SNs with a high rate of tumor relapse (50%, P<0.001). Therefore SN biopsy may give information about prognosis in head and neck melanoma patients.

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