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Table 2 Characteristics of localization and surgical outcomes

From: Noninferiority comparison of electromagnetic navigation-guided versus computed tomography-guided percutaneous localization of multiple small pulmonary nodules: a prospective randomized clinical trial

Nodule Localization or

Surgical Outcome

Total (n = 49)

EN group (n = 24)

CT group (n = 25)

P

(nodules = 107)

(nodules = 53)

(nodules = 54)

Deviation, mm

    

Total

8.0 (7.0)

9.0 (6.5)

7.5 (6.0)

0.33

Upper nodule

6.0 (6.0)

7.5 (7.8)

5.0 (7.0)

0.049

Lower nodule

10.0(7.0)

9.0 (6.5)

10.0 (9.0)

0.50

Procedural duration, min

    

Total

19.4 (6.2)

16.3 (4.2)

22.3 (8.2)

0.002

2 nodules

20.0 (6.1)

15.3 (4.2)

20.4 (7.8)

0.015

3 nodules

25.6 (6.8)

20.1 (4.1)

32.4 (9.6)

0.035

Complications, n (%)

    

Pneumothorax

 

-

5 (20)

 

Pulmonary hemorrhage

 

-

6 (24)

 

Primary resection success rate, % (n/n)

96.3 (103/107)

94.3 (50/53)

98.1 (53/54)

0.60

Nodule size, mm a

7.2 (4.2)

6.9 (4.5)

7.4 (3.9)

0.54

Margin distance, mm

18.8 (7.2)

19.5 (7.8)

18.2 (6.7)

0.36

Frozen section analysis, n (%)

   

0.91

Benign lesion

12 (11.2)

5 (9)

7 (13)

 

Atypical adenomatous

hyperplasia

11 (10.3)

6 (11)

5 (9)

 

Adenocarcinoma in situ

16 (15.0)

9 (17)

7 (13)

 

Minimally invasive adenocarcinoma

38 (35.5)

20 (38)

18(33)

 

Invasive adenocarcinoma

29 (27.1)

13 (25)

16 (30)

 

Squamous cell carcinoma

1 (0.9)

0 (0)

1 (2)

 

Surgical procedure, nodule

   

0.98

Wedge resection

40

20

20

 

Segmentectomy

48

24

24

 

Lobectomy

19

9

10

 
  1. Data are given as count (percentage) or mean (standard deviation) or median (interquartile range)
  2. EN: electromagnetic navigation; CT: computed tomography
  3. a Measured on a resected sample