Table 1.
Small Cell Lung Cancers in the NLST LDCT Imaging Arm According to Best Stage
| Stage | Screen Detected |
Interval Detecteda |
Postscreening/Never Screened |
All |
|---|---|---|---|---|
| No. (Column %) | No. (Column %) | No. (Column %) | No. (Column %) | |
| All | 49 (100) | 15 (100) | 79 (100) | 143 (100) |
| Stage I | 2 (4) | 2 (13) | 4 (5) | 8 (6) |
| Stage IIA | 4 (6) | 0 | 1 (1) | 5 (3) |
| Stage IIB | 1 (2) | 0 | 1 (1) | 2 (1) |
| Stage III | 18 (37) | 5 (33) | 22 (28) | 45 (31) |
| Stage IV | 21 (43) | 8 (53) | 49 (62) | 78 (55) |
| Occult | 0 | 0 | 1 (1) | 1 (1) |
| Unknown | 3 (6) | 0 | 1 (1) | 4 (3) |
LDCT = low-dose CT; NLST = National Lung Screening Trial.
a
Interval-detected cancers are within 1 year of a negative screen; only one case from the LDCT imaging arm was never screened.