Table 2. Acute treatment toxicity according to the criteria of the Radiation Therapy Oncology Group/European Organisation for Research and Treatment of Cancer (RTOG/EORTC) [8].

Treated region	Acute toxicity	Number of events N = 957 lesions
Pelvis 441 lesions	GU G1 G2 G3 G4 Total	112 (25%) 34 (8%) 6 (1.4%) 2 (0.5%) 154 (35%)
	GI G1 G2 G3 G4 Total	71 (16%) 14 (3%) 0 0 85 (19%)
Thorax 363 lesions	Lung toxicity G1 G2 G3 G4 Total	23 (6%)  4 (1%)  1 (0.3%) 0 28 (7.3%)
Thorax + Neck 376 lesions	Skin toxicity G1 G2 G3 G4 Total	27 (7%) 4 (1%) 0 0 31 (8%)

The degree of toxicity was evaluated during and at the end of treatment (maximum grade observed)

Legend: lesions = total number of treated lesions per region, GU = genitourinary toxicity, GI = gastrointestinal toxicity. G = grade, RTOG/EORTC = Radiation Therapy Oncology Group/European Organisation for Research and Treatment of Cancer