Number of surgically resected lung cancer cases in Okinawa between 1986 and 1998
| Tumour type | 1986 | 1990 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 |
|---|---|---|---|---|---|---|---|---|
| In 1986, 10 of 25 cases of squamous cell carcinoma were peripherally located. In 1990, 15 of 36; in 1993, 21 of 43; in 1994, 13 of 25; in 1995, 18 of 34; in 1996, 24 of 37; in 1997, 14 of 22; and in 1998, 10 of 21 were peripherally located. | ||||||||
| Squamous cell carcinoma | 25 | 36 | 43 | 25 | 34 | 37 | 22 | 21 |
| Adenocarcinoma | 21 | 28 | 39 | 25 | 42 | 34 | 34 | 65 |
| Adenosquamous carcinoma | 8 | 8 | 5 | 9 | 13 | 8 | 9 | 5 |
| Large cell carcinoma | 4 | 3 | 3 | 0 | 0 | 1 | 0 | 0 |
| Small cell carcinoma | 4 | 3 | 3 | 0 | 2 | 2 | 2 | 2 |
| Others | 6 | 4 | 1 | 2 | 2 | 1 | 5 | 1 |
| Total | 68 | 82 | 94 | 61 | 93 | 83 | 72 | 95 |