Objective To understand the latest research developments of the formation mechanism of psammoma body in human tumors and related issues. Methods Related domestic and foreign literatures were widely referred, analyzed, and reviewed. Results Psammoma body is unique pathological calcification in some tumors, which is arranged in concentric, laminar circles microscopically. Psammoma body is commonly seen in thyroid papillary carcinoma, meningiomas, ovarian serous papillary carcinoma, and so on. Conclusions Although arranged in concentric, laminar circles microscopically in tumor, the formation process of psammoma body is not entirely the same in different tumors. A comprehensive and objective understanding of psammoma body would be useful in cancer diagnosis and treatment.
Objective To explore the clinical epidemiologic characteristics and tendency of gastric cancer during recently ten years in northern Henan province. Methods The clinical data of 1 090 patients with gastric cancer in our department were collected from January 1998 to May 2008. The ten-year period was divided into two groups: previous 5 years group (n=433) and post 5 years group (n=657). The age, gender, pathologic characteristics and the relationship between age and pathologic features were analyzed retrospectively. Results ①The patient’s age was 15-83 years old 〔mean （57.60±10.84） years old〕 and men-momen ratio was 3.71∶1 in previous 5-year group. The patient’s age was 18-82 years old 〔mean （58.95±10.81）years old〕 and men-momen ratio was 2.84∶1 in post 5-year group. There was no significant difference in age or gender between two groups （Pgt;0.05）. ②Gastric cancer arised in cardia and gastric fundus more common and for the incidence of the site no change was found in two groups. The incidence of gastric antrum cancer descended but that of gastric body arised. ③The mean age of patients with gastrocardiac cancer was significantly different (Plt;0.05) between two groups. No significant difference occurred on the mean age of patients with gastric antrum (Pgt;0.05) or gastric body cancer (Pgt;0.05). The mean age of patients with highly malignant tumor (signet ring cell cancer, poorly differentiated adenocarcinoma and undifferentiated carcinoma) was significantly different compared with that of patients with lowly malignant tumor (well differentiated and moderately differentiated adenocarcinoma) (Plt;0.05). ④The proportion of patients with highly and lowly malignant tumor presented significantly different between the previous 5 years and the post 5 years (Plt;0.05). ⑤The proportion of early gastric cancer was very low and no correlation was found between infiltrating depth and age in all patients (Pgt;0.05). Conclusion Cardia and gastric fundus is the most common site of gastric cancer in northern Henan province. The patients with gastrocardiac cancer are often older but gastric antrum and gastric body cancer patients are younger. Highly malignant gastric cancer is often found in youths, however, lowly malignant gastric cancer occurred predominantly in elderly. The proportion of gastric cancer found early is very low in northern Henan province.
ObjectiveTo systematically evaluate the effect of mucin 1 (MUC1) expression on the prognosis and clinicopathologic characteristics of patients with colorectal cancer.MethodsThe cohort studies on the relationship between MUC1 expression and the prognosis of colorectal cancer patients were retrieved from PubMed, Embase, Web of Science, Cochrane Library, CNKI, China Biology Medicine, WanFang, VIP, and other databases from the establishment of the database to December 2020. The two researchers screened the literatures according to the inclusion and exclusion criteria, extracted relevant data, and performed meta analysis using Stata 12.0 software.ResultsA total of 17 eligible studies comprising 2 516 patients with colorectal cancer were included. The results of meta-analysis showed that the overall survival (OS) of patients with high MUC1 expression was worse than that with low MUC1 expression [HR=1.51, 95%CI (1.33, 1.71), P<0.001], but not statistically significant with disease-free survival [HR=1.39, 95%CI (0.41, 4.68), P=0.565]. Subgroup analysis results showed the same results as the overall analysis regardless of analysis method (multivariate or survival curve), different ethnic groups (Asian or Caucasian), and different sample sizes (≥100 or <100). The results of clinicopathologic analysis showed that the high expression of MUC1 was correlated with lymph node metastasis, distant metastasis, depth of invasion, and TNM stage (P<0.05), but not correlated with gender, age, degree of tumor differentiation, and tumor location (P>0.05).ConclusionsHigh expression of MUC1 is closely associated with poor prognosis, lymph node metastasis, distant metastasis, tumor invasion depth, and TNM stage in patients with colorectal cancer, which is expected to be an important reference indicator for disease monitoring and prognosis judgment of colorectal cancer.