Table 2.

Acute toxicities by CTCAE 4.0 (Grade II/III)

	All patients	Photon/electron therapy n=11 (%)	Proton therapy n=13 (%)	P value
Dermatitis*	13 (54)	6 (55)	7 (54)	1.00
Dysphagia‡	3 (13)	3 (27)	0	0.08
Otitis externa€	3 (13)	2 (18)	1 (8)	0.58
Mucositis§	16 (67)	10 (91)	6 (46)	<0.05

^*grade II/III dermatitis=brisk erythema, moderate edema, or moist desquamation

^‡grade II/III dysphagia= pain requiring change in diet and/or nutritional support

^€grade II/III otitis= discharge from ear canal

^§grade II/III mucositis= patchy or confluent ulcerations