Factor | Intramucosal Adenocarcinoma (n = 30)a | Submucosal Adenocarcinoma (n = 19)a | |
---|---|---|---|
Specimen size | < 5 cm | 18 (60%) | 10 (52.7%) |
> 5 cm | 12 (40%) | 9 (47.4%) | |
En bloc or Piecemeal | En bloc | 27 (90%) | 18 (94.7%) |
2 pieces | 1 (3.3%) | 1 (5.3%) | |
3 pieces | 2 (6.7%) | 0 (0%) | |
Orientation marked by gastroenterologist | 14 (46.7%) | 9 (47.4%) | |
Gross examination findings | Tumor nodule(s) | 20 (66.7%)* | 17 (89.5%)** |
Ulcerated mucosa | 3 (10%) | 0 (0%) | |
No tumor | 7 (23.3%) | 2 (10.5%) | |
Peripheral margin involvement (by histology) | Negative | 25 (83.3%) | 10 (52.6%) |
Positive | 3 (10%) | 2 (10.5%) | |
Changes in peripheral margin involvement from gross to histologic evaluation | Positive to negative | 1 (3.3%) | 0 (0%) |
Negative to positive | 1 (3.3%) | 7 (36.8%) | |
Sm1 (< 500 μ) | 7 (23%) | 4 (21%) | |
Specimen depth of excision (microscopic) | Sm2 (> 500-1000 μ) | 21 (70%) | 12 (63%) |
Sm3 (> 1000 μ) | 2 (7%) | 3 (16%) | |
Large pinholes | 2 (6.7%) | 6 (31.6%) | |
Tissue folding, producing interpretation problems | 3 (10%) | 2 (10.5%) |