Clinical features of screening-detected lung cancers in the fourth screening round
| Cancer stage | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ia | Ib | IIa | IIb | IIIa | IIIb | IV | Total histology | |
| n, % | n, % | n, % | n, % | n, % | n, % | n, % | n, % | |
| Histology | ||||||||
| Adenocarcinoma | 11* (47.8) | 3 (13.0) | 2 (8.7) | 3 (13.0) | 2 (8.7) | 1 (4.3) | 1 (4.3) | 23 (50.0)† |
| Squamous-cell carcinoma | 5 (50.0) | 2 (20.0) | 1 (10.0) | 1 (10.0) | – | – | 1 (10.0) | 10 (21.7) |
| BAC | 4‡ (75.0) | – | – | – | – | – | – | 4 (8.7) |
| Small-cell carcinoma | – | – | – | – | 1 (33.3) | – | 2 (66.7) | 3 (6.5) |
| NSCLC NOS | 1 (25.0) | – | – | – | – | 1 (25.0) | 2 (50.0) | 4 (8.7) |
| No diagnosis possible | 1 (50.0) | 1 (50.0) | – | – | – | – | – | 2 (4.4) |
| Total cancer stage n, % | 22 (47.8)§** | 6 (13.1) | 3 (6.5) | 4 (8.7) | 3 (6.5) | 2 (4.3) | 6 (13.1) | 46 (100) |
*For example 11 (47.8) should be read as: 47.8% (11/23) of all adenocarcinomas were detected in stage Ia.
†For example 23 (50.0) should be read as: 50% (23/46) of all screening-detected lung cancers in this round were adenocarcinomas.
‡Of which one was a pTisN0Mx non-mucinous adenocarcinoma in situ. This cancer was grouped together with a stage Ia lung cancer.
§For example 22 (47.8) should be read as: 47.8% (22/46) of the cancers detected in this round were stage Ia lung cancers.
BAC, bronchoalveolar carcinoma; NSCLC NOS, non-small cell lung carcinoma not otherwise specified.