Objective To detect expressions of CD31 and D2-40 in patients with simultaneous colorectal cancer with peritoneal metastasis and investigate their correlation between them. Method The expressions of CD31 and D2-40 protein in these 59 cases (there were 19 and 40 patients with or without peritoneal metastasis, respectively) of colorectal cancer were detected by immunohistochemical MaxVision method. Results ① The positive rates of CD31 and D2-40 protein expression in the colorectal cancer tissues with or without peritoneal metastasis were significantly higher than those of the normal colonic tissues (P<0.05), but which had no significant differences between the colorectal cancer tissues with or without peritoneal metastasis (P>0.05). ② The CD31 microvessel density (CD31-MVD) and D2-40 lymphatic microvessel density (D2-40-LMVD) in the colorectal cancer tissues with peritoneal metastasis were significantly higher than those of the normal colonic tissues (P<0.05) and the colorectal cancer tissues without peritoneal metastasis (P<0.05). ③ The CD31-MVD and D2-40-LMVD were not associated with all the clinicopathologic characteristics of the colorectal cancer patients without peritoneal metastasis (P>0.05), but which in the poorly differentiated adenocarcinoma and mucinous and signet ring cell carcinomas patients with peritoneal metastasis were significantly higher than those of the other types (P<0.05) and were not associated with the age, gender, and diamter of the tumor of it (P>0.05). ④ There was a positive correlation between the CD31-MVD and the D2-40-LMVD in the colorectal cancer patients with or without peritoneal metastasis (r=0.342, P=0.012; r=0.119, P=0.008). Conclusions CD31-MVD and D2-40-LMVD in colorectal cancer patients with peritoneal metastasis highly express and has a positive correlation, which means that they might have a certain relationship with peritoneal metastasis. There may be some common regulation way and collaboratively participate peritoneal metastasis of colorectal cancer.
Objective To explore clinicopathologic features and prognostic factors of different pathological types of advanced gastric cancer. Methods The clinicopathologic data of 98 patients with advanced gastric cancer who underwent radical gastrectomy in Suqian People’s Hospital, Nanjing Drum Tower Hospital Group, Affiliated to Nanjing University Medical School in 2011 were analyzed retrospectively. There were 53 cases of gastric adenocar-cinoma, 30 cases of mucinous adenocarcinoma, and 15 cases of signet ring cell carcinoma among them. The differences of clinicopathologic characteristics and prognosis were compared among different pathological types of advanced gastric cancer. Results ① There were no significant differences in terms of the gender, age, nerve invasion, and degree of differentiation among the three groups (P>0.05), there were significant differences in terms of the tumor diameter, tumor location, radical surgery type, regional lymph node metastasis, lymphatic cancer embolus, depth of invasion, and pTNM stage among the three groups (P<0.05). ② The results of the univariate analysis showed that the prognosis of gastric adenocarcinoma was associated with the tumor diameter, tumor location, radical surgery type, regional lymph node metastasis, depth of invasion, or pTNM stage (P<0.05); the prognosis of mucinous adenocarcinoma was associated with the radical surgery type, regional lymph node metastasis, or pTNM stage (P<0.05); the prognosis of signet ring cell carcinoma was associated with the regional lymph node metastasis, depth of invasion, and pTNM stage (P<0.05). ③ The results of the Cox multivariate analysis showed that the tumor location (P=0.016), regional lymph node metastasis (P=0.042), invasion depth (P=0.021), and pTNM stage (P=0.009) were the independent risk factors of prognosis for the gastric adenocarcinoma; the regional lymph node metastasis was the independent risk factor of prognosis for gastric mucinous adenocarcinoma (P=0.000); the tumor invasion depth (P=0.032) and regional lymph node metastasis (P=0.002) were the independent risk factors of prognosis for signet ring cell carcinoma. ④ The follow-up time was 60 months. The median follow-up time was 32 months in the gastric adenocarcinoma, 43 months in the mucinous adenocarcinoma, 23 months in the signet ring cell carcinoma, the 5-year accumulated survival rate was 30.2%, 23.3%, and 26.7% respectively. The comparison of survival curves of these three different pathological types of gastric cancer had no significant difference (P=0.131). Conclusion Clinical and pathological features of patients with different pathological types of advance gastric cancer present some differences, and prognostic factors are also different, but regional lymph node metastasis is a common prognostic factor for different pathological types of advanced gastric cancer.