Low- vs. Middle-dose Total Skin Electron Beam Therapy for Mycosis Fungoides: An Efficiency-based Retrospective Survey of Skin Response
Annelies Taverniers, Aurélie Du-Thanh, Marie Charissoux, Christine Kerr, Olivier Dereure
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Optimal doses of total skin electron beam therapy for mycosis fungoides remain to be established. Clinical efficiency and adverse effects of middle-dose (25 Gy) vs. low-dose (10–12 Gy) total skin electron beam therapy were retrospectively compared in a series of 14 and 12 mycosis fungoides, respectively. Overall skin response rate was 96.2% (92.9% middle-dose and 100% low-dose; not significant (NS)). Overall complete and partial skin response rates were 57.7% (42.9% middle-dose and 75% low-dose; NS) and 38.5% (50% middle-dose and 25% low-dose; NS), respectively. All responding patients relapsed after an overall median time of 5 months (7 months middle-dose vs. 4 months low-dose; p = 0.164, NS). Tolerance was equally fair in both groups, with only grade 1 and 2 adverse events observed in 100% vs. 66.7% of patients in middle-dose and low-dose groups (NS). Although no significant difference was observed, middle-dose protocol may be recommended owing to a longer relapse-free survival for a similar tolerance.