Variable

Total n (%)

No Recurrence N = 19 (82.6) n (%)

Recurrence N = 4 (17.4) n (%)

p-value*

Age at diagnosis, years (mean, SD)

23

63.7 (12.2)

63.4 (8.9)

0.96

Gender

23

Male

Female

6 (26.1)

17 (73.9)

4 (21.1)

15 (79.0)

2 (50)

2 (50)

0.27

Symptoms at diagnosis

23

Symptomatic

Asymptomatic

11 (47.8)

12 (52.2)

9 (47.4)

10 (52.6)

2 (50)

2 (50)

0.67

Surgical pathology reported:

23

Benign

Malignant

15 (65.2)

8 (34.8)

12 (63.2)

7 (36.8)

3 (75)

1 (25)

0.57

Tumor size cm (mean, SD, range)**

21

17

4

8.2 (6.3, 1.2 - 19)

13.3 (10.6, 3.5 - 27)

0.21

Closest margin (cm) (mean (SD, range))

8

7

1

0.79 (0.79, 0.013 - 0.18)

0.40 (n/a)

-

Pleural pattern

23

Visceral

Parietal

20 (87.0)

3 (13.0)

16 (84.2)

3 (15.8)

4 (100)

0

0.55

Tumor Base

22

Pedunculated

Sessile/inverted

15 (68.2)

7 (31.8)

13 (72.2)

5 (27.8)

2 (50)

2 (50)

0.38

Tumor border

23

Poorly defined

Well defined

1 (4.4)

22 (95.7)

1 (5.3)

18 (94.8)

0

4 (100)

0.83

Mitoses/10 HPF (mean, SD)

17

15

2

3.6 (7.8, 0 - 26)

1.5 (0.71, 1 - 2)

0.71

Mitoses/10 HPF

21

<4/10 HPF

>4/10 HPF

16 (76.2)

5 (23.8)

14 (77.8)

4 (22.2)

2 (66.7)

1 (33.3)

0.58

Tumor necrosis

19

Absent

Present

11 (57.9)

8 (42.1)

9 (60)

6 (40)

2 (50)

2 (50)

0.57

Tumor hemorrhage

18

Absent

Present

11 (61.1)

7 (38.9)

9 (64.3)

5 (35.7)

2 (50)

2 (50)

0.52

High Cellularity

21

Absent

Present

14 (66.7)

7 (33.3)

11 (64.7)

6 (35.3)

3 (75)

1 (25)

0.59

Nuclear Pleomorphism

17

Absent

Present

13 (76.5)

4 (23.5)

10 (76.9)

3 (23.1)

3 (75)

1 (25)

0.70

Nuclear Crowding

17

Absent

Present

14 (82.4)

3 (17.7)

11 (84.6)

2 (15.4)

3 (75)

1 (25)

0.58

Infiltration of adjacent structures

21

Absent

Present

18 (85.7)

3 (14.3)

15 (88.2)

2 (11.8)

3 (75)

1 (25)

0.49

Encapsulation

20

Absent

Present

1 (5.0)

19 (95.0)

1 (6.3)

15 (93.8)

0

4 (100)

0.80

Tumor contour

22

Lobulated

Smooth

12 (54.6)

10 (45.5)

9 (50)

9 (50)

3 (75)

1 (25)

0.37