Table 1 Patient characteristics

Number of patients

20

100

Median age (range)

63.5(41-87)

Gender

Male

12

60

Female

8

40

Pathology

Adenocarcinoma

18

90

Undifferentiated carcinoma

1

5

Malignant hemangiopericytoma

1

5

Tumor stage

T2N0M

6

30

T2N1M0

2

10

T3N1M0

9

45

T3N2M0

2

10

T4N0M0

1

5

Tumor site

Upper third

3

15

Middle third

4

20

Lower third

13

65

Location

Presacral region

7

35

Anastomotic junction without expansion to the sacrum

13

65

Prior treatments

Surgery

20

100

Miles

13

65

Dixon

7

35

TME

0

0

Radiation therapy & chemotherapy

10

50

Chemotherapy alone

2

10

Radiation therapy alone

4

20

none

4

20