Fig. 3

The skin condition at the beginning of prophylactic use of NS21 from the initiation of RT and to the 6th week in one representative patient from each group, showing frontal, left and right side views. a A 48 y/o male with nasopharyngeal cancer (cT2N2M0, stage III) who received 70 Gy in 35 fractions and who was enrolled in the study group. b A 60 y/o male with oropharyngeal cancer (cT2N2M0, stage IVA) who received 70 Gy in 35 fractions and who was enrolled in the control group