Table 3.
CT Characteristics
| All Referrals | Selected for Treatment | Not Selected for Treatment | |
|---|---|---|---|
| Number of patients | 1500 | 282 | 1218 |
| Scans available | 1211 | 274 | 937 |
| Mild centrilobular Severe centrilobular Panlobular Paraseptal No emphysema |
428 (35%) 440 (36%) 189 (16%) 146 (12%) 8 (0.7%) |
80 (29%) 113 (41%) 66 (24%) 15 (6%) 0 (0%) |
348 (37%) 327 (35%) 123 (13%) 131 (14%) 8 (1%) |
| Distribution homogeneous/heterogeneous (%) | 48/52 | 31/69 | 53/47 |
| Upper/Lower lobes predominant (%) | 71/29 | 64/36 | 75/25 |
| Destruction LUL 1/2/3/4 (%) | 40/38/19/2 | 35/46/19/1 | 42/35/19/3 |
| Destruction LLL 1/2/3/4 (%) | 55/31/11/1 | 52/33/13/2 | 56/31/10/1 |
| Destruction RUL 1/2/3/4 (%) | 37/35/24/3 | 33/39/26/2 | 38/34/23/3 |
| Destruction RLL 1/2/3/4 (%) | 56/32/10/1 | 53/32/13/2 | 56/31/9/1 |
| Left major fissure (intact/>90%intact/<90%intact/unknown (%) | 44/26/29/2 | 58/20/22/0 | 40/28/31/2 |
| Right major fissure (intact/>90% intact/<90% intact/unknown (%) | 25/32/41/1 | 36/31/33/0 | 22/33/44/2 |
| Right minor fissure (intact/>90% intact/<90% intact/unknown (%) | 12/14/72/3 | 12/18/70/0 | 11/13/72/3 |
| Bronchopathy | 666 (55%) | 140 (51%) | 526 (56%) |
| Mild bronchiectasis Severe bronchiectasis |
151 (13%) 20 (2%) |
30 (11%) 1 (0.4%) |
121 (13%) 19 (2%) |
| Giant bullae | 195 (16%) | 21 (8%) | 174 (19%) |
| Nodules requiring follow up | 89 (7%) | 27 (10%) | 62 (7%) |
| Fibrosis | 23 (2%) | 2 (0.7%) | 21 (2%) |
| Pleural pathology | 13 (1%) | 2 (0.7%) | 11 (1%) |
| Suspect for pulmonary hypertension | 148 (12%) | 25 (9%) | 123 (13%) |
Notes: Data is presented as number of patients (percentage of patients) or as percentage of cases. Destruction score based on a 1 to 4 Likert scale, with higher scores indicating more severe emphysematous destruction.
Abbreviations: CT, computed tomography; LUL, left upper lobe; LLL, left lower lobe; RUL, right upper lobe; RLL, right lower lobe.