Table 3 Frequency, sex distribution and mean age of individual lesions

Neoplastic: malignant

114 (52.5%)

44

70

8.3

Adenocarcinoma

93 (42.9%)

38

55

8

Lymphoma

9 (4.1%)

2

7

6.9

 B-cell type

6 (2.8%)

0

6

6.2

 T-cell type

3 (1.4%)

2

1

9

Sarcoma

9 (4.1%)

3

6

10.9

 Fibrosarcoma

4 (1.8%)

1

3

10.7

 Leiomyosarcoma

2 (0.9%)

1

1

15

 Gastrointestinal stromal tumour (GIST)

2 (0.9%)

1

1

9.5

 Non-GIST, non-smooth muscle (NIMTs)

1 (0.5%)

0

1

6

 Plasmacytoma

3 (1.4%)

1

2

11.7

Neoplastic: benign

58 (26.7%)

25

33

6

 Adenoma

52 (24.0%)

20

32

5.9

 Leiomyoma

6 (2.8%)

5

1

10

Non – neoplastic lesion

45 (21.1%)

25

20

7

 Heterogeneous colorectal polyps

44 (20.3%)

25

19

7.1

 Hyperplastic polyps

21 (9.7%)

8

13

6.3

 Inflammatory polyps

12 (5.5%)

9

3

8

 Fibroblastic polyps

5 (2.3%)

5

0

7.8

 Lymphoid polyps

4 (1.8%)

2

2

9.3

 Hamartomatous polyps

2 (0.9%)

1

1

5.5

 Ganglioneuromatosis

1 (0.5%)

0

1

4