Table:
Feature	N = 109	Outcomes
Improvement	Exacerbation	Death
Means of bronchoscopic therapy (n = 53)	51	1	1
Nd-YAG laser	19/53
APC	18/53
Freezing	15/53
Drug spraying	12/53
Clamping	6/53
Resection	5/53
High-frequency electrotome cautery	4/53
Stent implantation	2/53
Microwaving	1/53
Bronchoscopy/other treatments (n = 53)	51	1	1
Bronchoscopic therapy alone	20/53
Combined with drug therapy	32/53
Combined with EBRT	1/53
Drug therapy alone (n = 25)	25/25	20	4	1
EBRT/other treatments (n = 2)	2	0	0
Combined with glucocorticoids	1/2
Combined with glucocorticoids + colchicine	1/2
Surgical resection (n = 2)	2/2	2	0	0
Clinical observation/symptomatic treatment (n = 27)	27/27	20	5	2
Follow-up ≥ 3 months	66/109	49	9	8

What are the following image content in markdown style: | <ROWSPAN=2> Feature | <ROWSPAN=2> N = 109 | <COLSPAN=3> Outcomes | 
 | Improvement | Exacerbation | Death | 
 | --- | --- | --- | --- | --- | 
 | Means of bronchoscopic therapy (n = 53) |  | 51 | 1 | 1 | 
 | Nd-YAG laser | 19/53 | <ROWSPAN=9>  | <ROWSPAN=9>  | <ROWSPAN=9>  | 
 | APC | 18/53 | 
 | Freezing | 15/53 | 
 | Drug spraying | 12/53 | 
 | Clamping | 6/53 | 
 | Resection | 5/53 | 
 | High-frequency electrotome cautery | 4/53 | 
 | Stent implantation | 2/53 | 
 | Microwaving | 1/53 | 
 | Bronchoscopy/other treatments (n = 53) |  | 51 | 1 | 1 | 
 | Bronchoscopic therapy alone | 20/53 | <ROWSPAN=3>  | <ROWSPAN=3>  | <ROWSPAN=3>  | 
 | Combined with drug therapy | 32/53 | 
 | Combined with EBRT | 1/53 | 
 | Drug therapy alone (n = 25) | 25/25 | 20 | 4 | 1 | 
 | EBRT/other treatments (n = 2) |  | 2 | 0 | 0 | 
 | Combined with glucocorticoids | 1/2 | <ROWSPAN=2>  | <ROWSPAN=2>  | <ROWSPAN=2>  | 
 | Combined with glucocorticoids + colchicine | 1/2 | 
 |

Surgical resection (n = 2) | 2/2 | 2 | 0 | 0 | 
 | Clinical observation/symptomatic treatment (n = 27) | 27/27 | 20 | 5 | 2 | 
 | Follow-up ≥ 3 months | 66/109 | 49 | 9 | 8 |