Size does not determine the grade of malignancy of early invasive colorectal cancer

AIM:To clarify the clinicopathological characteristics of small and large early invasive colorectal cancers(EI-CRCs),and to determine whether malignancy grade depends on size.METHODS:A total of 583 consecutive EI-CRCs treated by endoscopic mucosal resection or surgery at the National Cancer Center Hospital between 1980 and 2004 were enrolled in this study.Lesions were classified into two groups based on size:small(≤10mm) and large(>10mm).Clinicopathological features,incidence of lymph node metastasis(LNM) and risk factors for LNM,such as depth of invasion,lymphovascular invasion(LVI) and poorly differentiated adenocarcinoma(PDA) were analyzed in all resected specimens.RESULTS:There were 120(21%) small and 463(79%) large lesions.Histopathological analysis of the small lesion group revealed submucosal deep cancer(sm:≥1000 μm) in 90(75%) cases,LVI in 26(22%) cases,and PDA in 12(10%) cases.Similarly,the large lesion group exhibited submucosal deep cancer in 380(82%) cases,LVI in 125(27%) cases,and PDA in 79(17%) cases.The rate of LNM was 11.2% and 12.1% in the small and large lesion groups,respectively.CONCLUSION:Small EI-CRC demonstrated the same aggressiveness and malignant potential as large cancer.

Depressed-type (0-IIc) colorectal neoplasm in patients with family history of first-degree relatives with colorectal cancer:A cross-sectional study

瞄准：调查关联沮丧类型(0-IIc ) 与颜色渲染一度的亲戚(FDR ) 的表面的瘤和家庭历史表面的癌症(CRC ) 。方法：这代表性的研究在国家癌症中心医院东方从 2000 年 6 月被进行到 2002 年 10 月。经历起始的全部的结肠镜检查的合格病人被一张问询表在 colonoscopic 考试以前在 FDR 之中关于 CRC 的家庭历史调查。所有内视镜的调查结果在结肠镜检查期间被记录，早阶段瘤 / 癌症的宏观的分类被分类进二种类型(0-IIc 对非 0-IIc ) 。机会比率(或) 并且 95% 信心间隔(CI ) 被 univariate 并且多计算变量与 CRC 估计在 FDR 的宏观的特征和 clinicopathological 数据包括性，年龄，和家庭历史之间的协会的逻辑回归。结果：在有 CRC 和性和年龄调整的全面早阶段瘤的 FDR 的家庭历史之间的一个协会的 OR 是 1.85 (95% CI：1.31-2.61， P = 0.0004 ) ，那为非 0-IIc 瘤是 1.71 (95% CI：1.22-2.41， P = 0.0017 ) 并且为 0-IIc 颜色，表面的瘤是 2.78 (95% CI：1.49-5.16， P = 0.0031 ) 。结论：我们的学习证明在有 CRC 和 0-IIc 的 FDR 的家庭历史之间的一个重要协会渲染表面的瘤。当有有 CRC 的 FDR 的家庭历史的病人经历结肠镜检查时， colonoscopists 应该小心地检查不仅水虫息似，而且沮丧类型(0-IIc ) 损害。