Table 1.

Patient characteristics

	Total
Number of patients	77
Median, years (range)	60 (37–76)
Female/male	54/23
Surgical approach
Abdominoperineal excision	26
Low anterior resection	43
Hartmann’s resection	7
Total Pelvic exenteration	1
Histologic diagnosis
Adenocarcinoma, well differentiated	26
Medium differentiated	32
Poorly differentiated	6
Unknown differentiation	9
Mucinous	2
Unclear/combination	2
Post surgical recurrence median month (Range)	49.9 (13.0–157.0)
Purpose of previous RT
Neoadjuvant	27
Adjuvant	9
Recurrence treatment	43
Previous RT median dose (range)	50 Gy (20–74)
Site of recurrence
Presacral	29
Side wall	23
Perineal	15
Recurrent tumor median size (range)	40 mm (14–110)
Surgical spacer placement	13

*Two patients received both neoadjuvant and adjuvant ratiotherapy.