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Table 2 Benchmark of Proposed Nodule Management Schedule against Existing Protocols

From: Optimizing the timing of diagnostic testing after positive findings in lung cancer screening: a proof of concept radiomics study

Recommendations

No. of participants (%, by column)

Lung Cancer diagnosed

Cancer-free

within 3 mos (n = 31)

within 3–12 mos (n = 20)

after 12 mos (n = 10)

by study end (n = 31)

AATS guideline, 2012

 Diagnostic workup

13 (14.1)

3 (9.7)

0 (0.0)

1 (10.0)

9 (29.0)

 Follow-up in 3 mos

2 (2.2)

0 (0.0)

0 (0.0)

0 (0.0)

2 (6.5)

 Follow-up in 3–6 mos

52 (56.5)

21 (67.7)

15 (75.0)

4 (40.0)

12 (38.7)

 Follow-up in 6 mos

25 (27.2)

7 (22.6)

5 (25.0)

5 (50.0)

8 (25.8)

ACCP Guideline, 2013

 Diagnostic workup

1 (1.1)

0 (0.0)

0 (0.0)

0 (0.0)

1 (3.2)

 Follow-up at 3 mos

72 (78.2)

23 (74.2)

15 (75.0)

8 (80.0)

26 (83.9)

 Follow-up in 6–12 mos

2 (2.2)

0 (0.0)

0 (0.0)

0 (0.0)

2 (6.5)

 Annual screen

16 (17.4)

8 (25.8)

5 (25.0)

1 (10.0)

2 (6.5)

 No further evaluation

1 (1.1)

0 (0.0)

0 (0.0)

1 (10.0)

0 (0.0)

 China Guideline, 2018

 Follow-up after 1 mosa

32 (34.8)

15 (48.4)

6 (30.0)

0 (0.0)

11 (35.5)

 Follow-up after 3 mos

56 (60.9)

15 (48.4)

13 (65.0)

9 (90.0)

19 (61.3)

 Annual screen

4 (4.3)

1 (3.2)

1 (5.0)

1 (10.0)

1 (3.2)

Lung-RADS, 2019 or NCCN Guideline, 2020b

 Diagnostic workup

42 (45.7)

16 (51.6)

7 (35.0)

1 (10.0)

18 (58.1)

 Follow-up in 3 mos

14 (15.2)

0 (0.0)

3 (15.0)

2 (20.0)

9 (29.0)

 Follow-up in 6 mos

18 (19.6)

7 (22.6)

5 (25.0)

4 (40.0)

2 (6.5)

 Annual screen

18 (19.6)

8 (25.8)

5 (25.0)

3 (30.0)

2 (6.5)

Proposed radiomics approach

 Diagnostic workup

26 (28.3)

19 (61.3)

6 (30.0)

1 (10.0)

0 (0.0)

 Follow-up in 3 mos

42 (45.7)

11 (35.5)

14 (70.0)

9 (90.0)

8 (25.8)

 Annual screen

24 (26.1)

1 (3.2)

0 (0.0)

0 (0.0)

23 (74.2)

  1. AATS: American Association for Thoracic Surgery; ACCP: American College of Chest Physicians; Lung-RADS: Lung CT Screening Reporting & Data System; NCCN: National Comprehensive Cancer Network
  2. aAfter tentative anti-inflammatory therapy
  3. bLung-RADS (baseline screening) and NCCN guidelines have only small differences regarding management of perifissural nodules and the diameter criteria for different follow-up timings among non-solid nodules, which did not result in a difference in terms of nodule management with our data