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. 2011 Feb 6:6:12.
doi: 10.1186/1748-717X-6-12.

Adjuvant radiation therapy in metastatic lymph nodes from melanoma

Jean-Emmanuel Bibault  1 , Sylvain Dewas, Xavier Mirabel, Laurent Mortier, Nicolas Penel, Luc Vanseymortier, Eric Lartigau
Affiliations

Adjuvant radiation therapy in metastatic lymph nodes from melanoma

Jean-Emmanuel Bibault et al. Radiat Oncol. .

Abstract

Purpose: To analyze the outcome after adjuvant radiation therapy with standard fractionation regimen in metastatic lymph nodes (LN) from cutaneous melanoma.

Patients and methods: 86 successive patients (57 men) were treated for locally advanced melanoma in our institution. 60 patients (69%) underwent LN dissection followed by radiation therapy (RT), while 26 patients (31%) had no radiotherapy.

Results: The median number of resected LN was 12 (1 to 36) with 2 metastases (1 to 28). Median survival after the first relapse was 31.8 months. Extracapsular extension was a significant prognostic factor for regional control (p = 0.019). Median total dose was 50 Gy (30 to 70 Gy). A standard fractionation regimen was used (2 Gy/fraction). Median number of fractions was 25 (10 to 44 fractions). Patients were treated with five fractions/week. Patients with extracapsular extension treated with surgery followed by RT (total dose ≥50 Gy) had a better regional control than patients treated by surgery followed by RT with a total dose <50 Gy (80% vs. 35% at 5-year follow-up; p = 0.004).

Conclusion: Adjuvant radiotherapy was able to increase regional control in targeted sub-population (LN with extracapsular extension).

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Figures

Figure 1
Figure 1
Inflammatory axillary nodal recurrence from cutaneous melanoma.
Figure 2
Figure 2
Extracapsular extension was significantly associated with a worse overall survival (p = 0.03).
Figure 3
Figure 3
Radiation therapy with a total dose of more than 50 Gy was associated with better regional control (p = 0.004).
Figure 4
Figure 4
A total dose of more than 50 Gy was associated with better overall survival (p = 0.005) for patients treated with surgery followed by radiation therapy.
Figure 5
Figure 5
Radiation therapy with a dose greater than 50 Gy was associated with better regional control (p = 0.03) for patients with extracapsular extension.
See this image and copyright information in PMC

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