Original Article
The clinical pathological features correlated with lymph node metastasis in T1 stage rectal carcinoma
Shuangmei Zou, Hongda Chen, Qing Fang, Jiangtao Li, Xiuyun Liu, Ning Lyu
Published 2019-02-25
Cite as Chin J Colorec Dis (Electronic Edition), 2019, 08(1): 23-31. DOI: 10.3877/cma.j.issn.2095-3224.2019.01.005
Abstract
ObjectiveTo investigate the association between clinical pathological factors and lymph node metastases in T1 stage rectal carcinoma.
MethodsWe retrospectively reviewed the 251 consecutive T1 rectal carcinoma patients who had undergone radical colectomy with lymph node dissection in a single institution. The histopathological factors were reviewed. The correlation between these factors and lymph node metastasis, tumor recurrence and survival were analyzed.
ResultsA total of 251 consecutive patients with T1 rectal carcinoma were included in this study. Lymph node metastasis occurred in 11.2% (28/251) of patients. The 3, 5 and 10 years overall survival was 98.6%, 96.8% and 94.9%, respectively, for all patients. The 3, 5 and 10 years overall survival of patients with or without lymph node metastasis were 100%, 95.6% and 90.9% or 99%, 96.9% and 95.4%, respectively. There was no statistical difference between the two group in overall survival. Univariate analysis showed that each of the following histopathological factors had a significant influence on lymph node metastasis, which are patients′ age (P=0.05); adenomatous background (P<0.01), tumor differentiation (P<0.01), cribriform structure (P=0.03), PDC (P=0.02), tumor budding (P=0.01), lymphvascular invasion (P<0.01), submucosa venous invasion (P<0.01) and glandular pattern at the submucosal invasive front (P=0.04). Multivariate analysis showed that age (P=0.02), no adenomatous background (P<0.01), tumor differentiation (P=0.04) and submucosa venous invasion (P=0.02) were significantly associated with lymph node metastasis. We also found that open-type glandular pattern is also correlated with gross plat-type (P=0.03); no adenoma background (P=0.03), complete disruption of the muscularis mucosa (P=0.05), high grade tumor budding (P<0.001) and tumor necrosis (P<0.001).
ConclusionIn the present study, we not only verified the effectiveness of those classical pathological factors, but proposed the cribriform structure, open-type glandular pattern at the submucosal invasive front in predicting lymph node metastasis in T1 stage rectal carcinoma.
Key words:
Rectal neoplasms; Neoplasm metastasis; Prognosis; T1 stage; Recurrence; Risk factor
Contributor Information
Shuangmei Zou
Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Hongda Chen
Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Qing Fang
Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Jiangtao Li
Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Xiuyun Liu
Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Ning Lyu
Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China