Research Article
Clinicopathologic Significance of Extranodal Tumor Extension in Colorectal Adenocarcinoma with Regional Lymph Node Metastasis
Table 1
Baseline patient characteristics (
).
| | Factors | Value (%) |
| | Number of patients | 419 (100%) | | Mean age at surgery (years) | 63.4 (±11.4) | | Sex | | | Male | 257 (61.3%) | | Female | 162 (38.7%) | | Histologic grade | | | Grade 1 | 31 (7.4%) | | Grade 2 | 196 (46.8%) | | Grade 3 | 168 (40.1%) | | Grade 4 | 24 (5.7%) | | Pathologic characteristics | | | pT | | | 1 | 35 (8.4%) | | 2 | 42 (10.0%) | | 3 | 263 (62.8%) | | 4a | 52 (12.4%) | | 4b | 27 (6.4%) | | pN | | | 0 | 180 (43.0%) | | 1a | 48 (11.5%) | | 1b | 55 (13.1%) | | 1c | 9 (2.1%) | | 2a | 62 (14.8%) | | 2b | 65 (15.5%) | | M | | | 0 | 390 (93.0%) | | 1a | 25 (6.0%) | | 1b | 4 (1.0%) | | Mean number of removed LNs | 29.2 (±15.78) | | Mean number of metastatic LNs | 3.6 (±6.83) |
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LNs: lymph nodes.
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