Table 2.
Clinicopathological Similarities of Multiple Gastric Tumors
| Primary → secondary | Synchronous (44 lesions) | Metachronous (100 lesions) | Total (144 lesions) |
|---|---|---|---|
| Gross type | |||
| Polypoid → polypoid/flat elevated/depressed | 0/2/2 | 0/2/0 | 0/4/2 |
| Flat elevated → polypoid/flat elevated/depressed | 4/28/4 | 7/60/12 | 11/88/16 |
| Depressed → polypoid/flat elevated/depressed | 0/4/0 | 1/9/9 | 1/13/9 |
| Same gross type | 28 (63.6%) | 69 (69.0%) | 97 (67.4%) |
| Location (long axis) | |||
| Upper → upper/mid/lower | 1/1/1 | 1/3/1 | 2/4/2 |
| Mid → upper/mid/lower | 4/8/6 | 3/15/15 | 7/23/21 |
| Lower → upper/mid/lower | 2/8/13 | 3/19/40 | 5/27/53 |
| Same location | 22 (50.0%) | 56 (56.0) | 78(54.2%) |
| Location (short axis) | |||
| AW → AW/LC/PW/GC | 0/1/6/0 | 5/6/5/5 | 5/7/11/5 |
| LC → AW/LC/PW/GC | 5/6/1/3 | 8/12/10/4 | 13/18/11/7 |
| PW → AW/LC/PW/GC | 2/5/4/1 | 3/8/5/5 | 5/13/9/6 |
| GC → AW/LC/PW/GC | 5/1/2/2 | 3/3/7/11 | 8/4/9/13 |
| Same location | 12 (27.3%) | 33 (33.0%) | 45 (31.3%) |
| Histologic type | |||
| Cancer → cancer/dysplasia | 10/18 | 23/30 | 33/48 |
| Dysplasia → cancer/dysplasia | 4/12 | 14/33 | 18/45 |
| Same histologic type | 22 (50.0%) | 56 (56.0%) | 78 (54.2%) |
AW, anterior wall; LC, lesser curvature; PW, posterior wall; GC, greater curvature.