Table 2.
Characteristics of colon cancers included in the tissue microarray.
| AJCC Summary Stage | ||||
|---|---|---|---|---|
| I | II | III | IV | |
| Nodes Positive | ||||
| < 1 | 49 | 122 | 0 | 5 |
| 1–3 | 0 | 0 | 85 | 9 |
| ≥ 3 | 0 | 0 | 59 | 30 |
| No nodes examined | 0 | 0 | 0 | 7 |
| Unknown | 0 | 0 | 0 | 1 |
| Nodes Examined | ||||
| < 8 | 21 | 28 | 29 | 11 |
| 8–12 | 10 | 31 | 36 | 13 |
| 12–16 | 9 | 31 | 33 | 11 |
| > 16 | 9 | 32 | 45 | 16 |
| No nodes examined | 0 | 0 | 0 | 7 |
| Unknown | 0 | 0 | 1 | 1 |
|
Proximal Margin Involvement |
||||
| Involved | 0 | 0 | 0 | 0 |
| Uninvolved | 49 | 122 | 144 | 47 |
| Cannot be assessed | 0 | 0 | 0 | 5 |
|
Distal Margin Involvement |
||||
| Involved | 1 | 0 | 0 | 0 |
| Uninvolved | 48 | 122 | 144 | 47 |
| Cannot be assessed | 0 | 0 | 0 | 5 |
| Location | ||||
| Ascending Colon | 4 | 19 | 21 | 7 |
| Hepatic Flexure | 2 | 8 | 10 | 2 |
| Transverse Colon | 3 | 18 | 10 | 4 |
| Splenic Flexure | 1 | 5 | 7 | 1 |
| Descending Colon | 0 | 7 | 4 | 0 |
| Rectosigmoid Junction | 0 | 2 | 2 | 1 |
| Cecum | 11 | 28 | 32 | 14 |
| Appendix | 0 | 0 | 0 | 2 |
| Sigmoid Colon | 28 | 35 | 58 | 20 |
| Colon, Not Specified | 0 | 0 | 0 | 1 |
|
Blood/Lymphatic Vessel Invasion |
||||
| Intramural | 1 | 1 | 12 | 4 |
| Extramural | 0 | 4 | 13 | 2 |
| Absent | 48 | 116 | 119 | 42 |
Characteristics of tumors included in the tissue microarray are noted as distinguished by American Joint Committee on Cancer (AJCC) summary stage. Definitions of stages with reference to TMN and Duke’s stages are as follows (T refers to tumor depth, N to number of nodes, and M to number of metastases):
- Stage I: T1–T2, N0, M0; Dukes A
- Stage II: T3–T4, N0, M0; Dukes B
- Stage III: Any T, N1–N2, M0; Dukes C
- Stage IV: Any T, Any N, M1; Dukes C