Prostate cancer: trends in mortality and stage-specific incidence rates by racial/ethnic group in Los Angeles County,California (United States)

Between 1976 and 1988 in the United States, the secular trends in age-adjusted incidence rates of prostate cancer were significantly different by racial/ethnic group (P<0.001), and increased significantly only among non-Hispanic Whites at a rate of 2.7 percent (95 percent confidence interval [CI]=2.3–3.1%) annually. While incidence rates of regional disease increased significantly (7.7 percent to 11.3 percent annually) among all racial/ethnic groups during this period, localized disease increased significantly only among non-Hispanic Whites, by 1.8 percent (CI=1.4–2.3%) annually. Prostate cancer mortality in Los Angeles County (California) remained constant among Hispanics, non-Hispanic Whites, and Asians, but increased 1.6 percent (CI=0–3.2%) annually among Blacks. While the increase in localized disease rates of non-Hispanic Whites may be due to increased detection of asymptomatic disease, this apparently has not occurred among other racial/ethnic groups in Los Angeles County. The secular increase in regional disease rates among all racial/ethnic groups without a concurrent increase in mortality (except Blacks), suggests increased accuracy of staging rather than a true increase in incidence may account for these trends. Adjusted for socioeconomic status, year and age at diagnosis, Black and Hispanic men were at significantly higher risk of being diagnosed with non-localized disease (odds ratio = 1.39 and 1.24, respectively) than were non-Hispanic Whites.Drs Ross and Bernstein are also with the Cancer Surveillance ProgramThis work was supported in part by grant CA17054 from the US National Institutes of Health, and grant SIG#20 from the American Cancer Society. Cancer incidence data were collected under Subcontract 050H-8709 with the California Public Health Foundation. The subcontract is supported by the California Department of Health Services as part of its statewide cancer reporting program, mandated by Health and Safety Code Section 210 and 2113.     

Incidence and mortality rates of selected infection-related cancers in Puerto Rico and in the United States

Background  

In 2002, 17.8% of the global cancer burden was attributable to infections. This study assessed the age-standardized incidence and mortality rates of stomach, liver, and cervical cancer in Puerto Rico (PR) for the period 1992-2003 and compared them to those of Hispanics (USH), non-Hispanic Whites (NHW), and non-Hispanic Blacks (NHB) in the United States (US).     

Time to diagnosis and breast cancer stage by race/ethnicity

We examined differences in time to diagnosis by race/ethnicity, the relationship between time to diagnosis and stage, and the extent to which it explains differences in stage at diagnosis across racial/ethnic groups. Our analytic sample includes 21,427 non-Hispanic White (White), Hispanic, non-Hispanic Black (Black) and non-Hispanic Asian/Pacific Islander (Asian) women diagnosed with stage I to IV breast cancer between January 1, 2000 and December 31, 2007 at one of eight National Comprehensive Cancer Network centers. We measured time from initial abnormal mammogram or symptom to breast cancer diagnosis. Stage was classified using AJCC criteria. Initial sign of breast cancer modified the association between race/ethnicity and time to diagnosis. Among symptomatic women, median time to diagnosis ranged from 36?days among Whites to 53.6 for Blacks. Among women with abnormal mammograms, median time to diagnosis ranged from 21?days among Whites to 29 for Blacks. Blacks had the highest proportion (26?%) of Stage III or IV tumors. After accounting for time to diagnosis, the observed increased risk of stage III/IV breast cancer was reduced from 40 to 28?% among Hispanics and from 113 to 100?% among Blacks, but estimates remained statistically significant. We were unable to fully account for the higher proportion of late-stage tumors among Blacks. Blacks and Hispanics experienced longer time to diagnosis than Whites, and Blacks were more likely to be diagnosed with late-stage tumors. Longer time to diagnosis did not fully explain differences in stage between racial/ethnicity groups.     

Incidence rates of the major leukemia subtypes among US Hispanics, Blacks, and non-Hispanic Whites

While leukemia rates are thought to be lower in South and Central America, no study has systematically investigated incidence rates of the leukemia subtypes among Hispanics in the U.S. This was a retrospective cohort study, using data from the Surveillance, Epidemiology, and End Results (SEER) Program of the National Cancer Institute, 1992 - 2001, to compare leukemia incidence rates as a function of race and ethnicity. It was found that in adults, Hispanics had lower incidence rates for each of the major types of leukemia as compared to non-Hispanic Whites: For AML, elderly Whites had an incidence rate ratio (IRR) of 1.61 in comparison to Hispanics (p < 0.001) and 1.27 in comparison to Blacks (p < 0.001); for CML, the IRR among the elderly was 1.42 that of Hispanics (p < 0.001) and 1.22 that of Blacks (p = 0.003); and for CLL, the IRR was 2.31 times that of Hispanics (p < 0.001) and 1.48 times that of Blacks (p < 0.001). In ALL, however, Hispanics aged 0 - 19 had a significantly higher incidence rate than Whites and Blacks, with an IRR of 1.32 compared to Whites (p < 0.001), and 2.62 compared to Blacks (p < 0.001). In AML, CML, and CLL, among people age 65 or older, white non-Hispanics have higher incidence rates than Blacks, and Blacks have higher incidence rates than Hispanics. Childhood ALL incidence rates are highest among Hispanics, and lowest among Blacks.     

Incidence of esophageal and gastric cancers among Hispanics,non-Hispanic whites and non-Hispanic blacks in the United States: subsite and histology differences

Objective We examined subsite- and histology-specific esophageal and gastric cancer incidence patterns among Hispanics/Latinos and compared them with non-Hispanic whites and non-Hispanic blacks. Methods Data on newly diagnosed esophageal and gastric cancers for 1998–2002 were obtained from 37 population-based central cancer registries, representing 66% of the Hispanic population in the United States. Age-adjusted incidence rates (2000 US) were computed by race/ethnicity, sex, anatomic subsite, and histology. The differences in incidence rates between Hispanics and non-Hispanics were examined using the two-tailed z-statistic. Results Squamous cell carcinoma accounted for 50% and 57% of esophageal cancers among Hispanic men and women, respectively, while adenocarcinoma accounted for 43% among Hispanic men and 35% among Hispanic women. The incidence rate of squamous cell carcinoma was 48% higher among Hispanic men (2.94 per 100,000) than non-Hispanic white men (1.99 per 100,000) but about 70% lower among Hispanics than non-Hispanic blacks, for both men and women. In contrast, the incidence rates of esophageal adenocarcinoma were lower among Hispanics than non-Hispanic whites (58% lower for men and 33% for women) but higher than non-Hispanic blacks (70% higher for men and 64% for women). Cardia adenocarcinoma accounted for 10–15% of gastric cancers among Hispanics, and the incidence rate among Hispanic men (2.42 per 100,000) was 33% lower than the rate of non-Hispanic white men (3.62 per 100,000) but 37% higher than that of non-Hispanic black men. The rate among Hispanic women (0.86 per 100,000), however, was 20% higher than that of non-Hispanic white women (0.72 per 100,000) and 51% higher than for non-Hispanic black women. Gastric non-cardia cancer accounted for approximately 50% of gastric cancers among Hispanics (8.32 per 100,000 for men and 4.90 per 100,000 for women), and the rates were almost two times higher than for non-Hispanic whites (2.95 per 100,000 for men and 1.72 per 100,000 for women) but about the same as the non-Hispanic blacks. Conclusion Subsite- and histology-specific incidence rates of esophageal and gastric cancers among Hispanics/Latinos differ from non-Hispanics. The incidence rates of gastric non-cardia cancer are almost two times higher among Hispanics than non-Hispanic whites, both men and women. The rates of gastric cardia cancer are lower among Hispanics than non-Hispanic whites for men but higher for women. The rates of esophageal and gastric cardia adenocarcinomas are higher among Hispanics than non-Hispanic blacks.     

Colorectal carcinoma screening among Hispanics and non-Hispanic whites in a rural setting

BACKGROUND: Colorectal carcinoma ranks as the second most common cancer and the second leading cause of cancer death in the United States. Hispanics are less likely than their non-Hispanic white counterparts to have ever received a fecal occult blood test (FOBT) or sigmoidoscopy/colonoscopy. Little is known about the barriers to screening in the Hispanic population. METHODS: The authors used baseline data from a community randomized trial of cancer prevention to compare screening prevalence and the associations between reported barriers and screening participation between Hispanics (n = 137) and non-Hispanic whites (n = 491) age > or = 50 years. RESULTS: Hispanics were less likely than non-Hispanic whites to have ever received an FOBT (P = 0.003) or sigmoidoscopy/colonoscopy (P = 0.001). No significant difference across ethnic groups was observed in the prevalence of recent screening using FOBT (29.8% for Hispanics vs. 34.5% for non-Hispanic whites; P = 0.41), but recent use of sigmoidoscopy/colonoscopy was lower for Hispanics (24.1% for Hispanics vs. 33.7% for non-Hispanic whites; P 0.06). Lacking health care coverage or having few years of education were directly associated with failure to ever receive an FOBT or sigmoidoscopy/colonoscopy. CONCLUSIONS: Interventions to improve adherence to colorectal carcinoma screening recommendations among Hispanics should target initial screening examinations, particularly among those lacking health care coverage or having low levels of education.     

Incidence of cutaneous melanoma among non-Hispanic Whites, Hispanics, Asians, and Blacks: an analysis of California Cancer Registry data, 1988-93

Cutaneous malignant melanoma occurs less frequently among non-Whitepopulations than among Whites. As a result, little is known about theincidence and epidemiology of melanoma among other race/ethnicity groups.Data from the California Cancer Registry (United States) among 879 Hispanic,126 Asian, and 85 Black men and women diagnosed with melanoma in 1988-93 wereanalyzed and compared with data for 17,765 non-Hispanic White cases. Average,annual, age-adjusted incidence rates per 100,000 population were 17.2 for men(M) and 11.3 for women (W) for non-Hispanic Whites; 2.8 (M), 3.0 (W) forHispanics; 0.9 (M), 0.8 (W) for Asians; and 1.0 (M), 0.7 (W) for non-HispanicBlacks. Among men, melanoma occurred on the lower extremity for 20 percent ofHispanics, 36 percent of Asians, and 50 percent of Blacks compared with ninepercent of non-Hispanic Whites, with similar but less pronounced differencesin site distribution by race/ethnicity for women. Among men, melanoma wasdiagnosed after it had metastasized to a remote site for 15 percent ofHispanics, 13 percent of Asians, and 12 percent of Blacks, compared with sixpercent of non-Hispanic Whites. Among women, seven percent of Hispanics, 21percent of Asians, and 19 percent of Blacks were diagnosed with late-stagemelanoma compared with four percent of non-Hispanic Whites. Althoughhistologic type was not specified for nearly half of the cases, Hispanic,Asian, and Black patients were more likely than non-Hispanic White patientsto have been diagnosed with acral lentiginous melanoma. MelanomaamongHispanics, Asians, and Blacks differs in incidence, site distribution,stage at diagnosis, andhistologic type from melanoma among non-HispanicWhites, and identification of risk factors for melanoma in theserace/ethnicity groups would elucidate further the role of sun and otherfactors in the etiology of melanoma.     

Increasing incidence of colon and rectal cancer among Hispanics and American Indians in New Mexico (United States), 1969-94

Objectives: This study evaluates time trends in colon and rectal cancer incidence and mortality among the three major race/ethnic groups (Hispanics, American Indians, and non-Hispanic Whites) in New Mexico (United States). Methods: We used data from the New Mexico Tumor Registry (NMTR) and computed average annual age-standardized incidence and mortality rates. Colon cancer incidence rates were further examined by anatomical subsite. Estimated annual percent change (EAPC) in incidence and mortality over time were computed using Poisson regression. Results: Invasive colorectal cancer incidence rates increased from 1969-89 in all three race/ethnic groups, but decreased among non-Hispanic Whites in 1990-94, while rates continued to increase among minority populations, especially among minority men. Over the 26-year period, EAPC in colon cancer incidence among men was 3.6 percent for Hispanics, 4.7 percent for American Indians, and 0.7 percent for non-Hispanic Whites. Right-sided colon cancers were more common among American Indian women, and among all women aged 65 years and older. Mortality rates decreased steadily among non-Hispanic Whites over the study period, especially among women. Conclusions: Studies are needed to identify important modifiable risk factors and to develop strategies to increase the use of colorectal cancer screening-procedures among the minority populations.     

Risk factors associated with the development of intestinal metaplasia in first-degree relatives of gastric cancer patients.

Family relatives of gastric cancer patients have a higher risk of gastric cancer and premalignant gastric lesions. We sought to determine the risk factors associated with the presence of intestinal metaplasia in a large cohort of gastric cancer relatives. First-degree relatives of gastric cancer patients were invited for screening gastroscopy. Endoscopic gastric biopsies were obtained from the antrum and corpus. Gastric biopsies were analyzed for Helicobacter pylori infection, severity of inflammation, and presence of intestinal metaplasia. Stepwise logistic regressions were used to identify for risk factors associated with presence of intestinal metaplasia in cancer relatives. Two hundred seventy cancer relatives underwent screening endoscopy (median age, 42; 47% male and 48% siblings). Among them, 161 (59.6%) were H. pylori positive and 81 (30%) had confirmed intestinal metaplasia. The following factors were found to be associated with the presence of intestinal metaplasia: age, male sex, H. pylori infection, birth order, alcohol use, siblings with stomach cancer, childhood living conditions, and water supply. Individuals with intestinal metaplasia had more severe acute and chronic inflammation in the antrum and corpus (P < 0.003). With multiple logistic regression, H. pylori infection [odds ratio (OR), 3.23], male gender (OR, 2.09), age (OR, 1.07), and a history of gastric cancer in siblings (OR, 1.91) were independent factors associated with the development of intestinal metaplasia in cancer relatives. In conclusion, we have identified risk factors associated with gastric intestinal metaplasia in stomach cancer relatives, which may be useful in the understanding of gastric carcinogenesis in these high-risk individuals.     

Genetic admixture among Hispanics and candidate gene polymorphisms: potential for confounding in a breast cancer study?

Hispanics in the U.S. Southwest have genetic ancestry from Europeans and from American Indians, two groups with markedly different breast cancer incidence rates. Genetic admixture may therefore bias estimates of associations between candidate cancer susceptibility genes and breast cancer in Hispanics. We estimated genetic admixture using 15 ancestry-informative markers for 1,239 Hispanics and 2,505 non-Hispanic Whites in a breast cancer case-control study in the Southwest, the Four Corners Study. Confounding risk ratios (CRR) were calculated to quantify potential bias due to admixture. Genetic admixture was strongly related to self-reported race and ethnic background (P < 0.0001). Among Hispanic controls, admixture was significantly associated with allele frequency for 5 of 11 candidate gene single nucleotide polymorphisms (SNP) examined. Hispanics in the highest versus the lowest quintile of American Indian admixture had higher mean body mass index at age 30 years (25.4 versus 23.6 kg/m(2); P = 0.003), shorter mean height (1.56 versus 1.58 m; P = 0.01), higher prevalence of diabetes (14.8% versus 7.2%; P = 0.04), and a larger proportion with less than a high school education (38.5% versus 23.2%; P = 0.001). Admixture was not associated with breast cancer risk among Hispanics (P = 0.65). CRRs for potential bias to candidate SNP-breast cancer risk ratios ranged from 0.99 to 1.01. Thus, although genetic admixture in Hispanics was associated with exposures, confounding by admixture was negligible due to the null association between admixture and breast cancer. CRRs from simulated scenarios indicated that appreciable confounding by admixture would occur only when within-group candidate SNP allele frequency differences are much larger than any that we observed.     

Age-standardized incidence and mortality rates of oral and pharyngeal cancer in Puerto Rico and among Non-Hispanics Whites, Non-Hispanic Blacks, and Hispanics in the USA

Background  

In the American region, Puerto Rico (PR) has the highest incidence of oral and pharyngeal cancer (OPC), but racial/ethnic differences have never been assessed and compared with other groups in the United States of America (USA). We compared the age-adjusted incidence and mortality rates of OPC between PR and among USA Hispanics (USH), Non-Hispanic Whites (NHW), and Non-Hispanic Blacks (NHB) to assess the burden of this cancer in PR.     

Smoking and bladder cancer risk in Blacks and Whites in the United States

A population-based case-control study of bladder cancer (2,982 cases and 5,782 controls) conducted in 10 areas of the United States examined the effect of smoking as a risk factor among Blacks and Whites, after adjustment for occupation and other potential confounders. Although the overall risk for smoking was slightly higher in Blacks than Whites (relative risk = 2.7 and 2.2, respectively), this difference was not statistically significant. Estimation of risk by dose and currency of exposure revealed no consistent racial disparities in smoking-related risks. Race-specific, attributable risk estimates indicated that nearly half of bladder cancers among both Blacks and Whites could have been prevented by elimination of smoking.     

Oesophageal cancer incidence in the United States by race, sex, and histologic type, 1977�C2005

Background:

In the United States, the rates and temporal trends of oesophageal cancer overall and for the two predominant histologic types – adenocarcinoma (ADC) and squamous cell carcinoma (SCC) – differ between Blacks and Whites, but little is known with regard to the patterns among Asians/Pacific Islanders or Hispanics.

Methods:

Using the Surveillance, Epidemiology, and End Results programme data, we analysed oesophageal cancer incidence patterns by race, sex, and histologic type for the period 1977–2005.

Results:

Total oesophageal cancer incidence has been increasing among Whites only; the rates among all other race groups have declined. Moreover, rates among White men surpassed those among Blacks in 2004. Oesophageal SCC rates have been decreasing among virtually all racial/ethnic groups; rates among Hispanic and Asian/Pacific Islander men have been intermediate to those of Blacks and Whites, with rates among women being lower than those among Blacks or Whites. The ADC rates among Hispanic men may be rising, akin to the historical trends among Whites and Blacks. The sex ratios for these cancers also varied markedly.

Conclusions:

These observations may provide clues for aetiological research.     

Racial differences in the risk of invasive squamous-cell cervical cancer

To investigate reasons for the higher rates of invasive squamous-cell cervical carcinoma among Blacks than Whites in the United States, we examined data from a case-control study of cervical cancer conducted in five geographic areas of the US, supplemented by incidence data from the Surveillance, Epidemiology, and End Results (SEER) Program, and hysterectomy prevalence data from the Cancer and Steroid Hormone Study. We observed only minor differences between Blacks and Whites in the magnitude of relative risks associated with a long interval since last Pap smear, multiple sexual partners, cigarette smoking, a higher number of births, and low levels of income and education. Thus, differences in the strength of associations contributed little to the higher incidence rate in Blacks, but the prevalence of these risk factors, except for cigarette smoking, was higher in Blacks than Whites. The SEER incidence rate ratio of 2.3 for Blacks compared to whites was increased to 2.7 when incidence rates utilized denominators corrected for prevalence of hysterectomy, while the rate difference increased from 14.9 to 25.8 cases per 100,000 person-years (PY). We estimated further that, after adjustment for prevalence of hysterectomy, the incidence rate for women at the lowest levels of exposure to the risk factors evaluated was 2.2 times higher in Blacks than Whites, but that the corresponding rate difference was only 2.2 cases per 100,000 PYs. Thus, our results suggest that racial differences in the prevalence of exposure to identified risk factors account for most of the difference in incidence rates. It remains to be determined what, as yet unidentified, aspects of lower socioeconomic status contribute to the higher incidence rate in Blacks.Authors are with the Epidemiology and Biostatistics Program, Division of Cancer Etiology, National Cancer Institute. Address correspondence to Ms Schairer, Environmental Epidemiology Branch, National Cancer Institute, National Institutes of Health, Executive Plaza North, Room 443, Bethesda, MD 20892, USA.     

胃癌及癌前病变与幽门螺杆菌

目的　幽门螺杆菌 (Helicobacterpylori,Hpylori)感染与胃癌的关系一直倍受人们关注 ,检查胃癌及癌前病变 ,如萎缩性胃炎、肠腺化生、异型增生病人Hpylori感染情况 ,了解Hpylori感染与胃癌的关系。方法　通过胃镜钳取胃粘膜 ,用快速尿素酶试验法(RUT)、PCR法、HE银染法等三种方法同时检查 ,判定Hpylori感染 ,并作病理细胞学检查。共查萎缩性胃炎 89例、肠腺化生 64例、异型增生 47例、胃癌 3 0例 ,功能性消化不良 10 3例作为对照。结果　Hpylori阳性率在萎缩性胃炎、肠腺化生病人中较高 ,分别是79 3 %和 81 3 % ,与对照组功能性消化不良病人 (阳性率 61 2 % )相比有显著统计学差异 ,P值均小于 0 0 1。异型增生组Hp阳性率较低 72 % ,与对照组相比P >0 0 5 ,无显著统计学差异。胃癌病人与对照组相比P <0 0 5 ,Hp阳性率显著降低。结论　Hpylori感染与萎缩性胃炎、胃粘膜肠腺化生密切相关 ,与异型增生、胃癌无直接关系。Hpylori感染主要参与癌前病变的前期阶段 ,是胃癌的高危险因素     

癌基因ras产物P^21蛋白在胃癌及癌前病变的表达

应用流式细胞术结合细胞免疫荧光技术对胃癌、非典型增生、肠化生、浅表性胃炎及正常胃粘膜组织进行了ras基因产物P~(21)蛋白的定量及定性研究.P~(21)含量及P~(12)阳性细胞百分率以胃癌最高,非典型增生及肠化生P~(12)表达也增高,均与浅表性胃炎及正常胃粘膜有显著差异(P<0.001).提示胃癌前病变时ras基因已经开始活化,其蛋白产物P~(12)过度表达.     

Is type III intestinal metaplasia an obligatory precancerous lesion in intestinal-type gastric carcinoma?

This retrospective study was performed to assess whether type III intestinal metaplasia is an obligatory precancerous lesion of intestinal-type gastric carcinoma and to determine its possible use as a marker of enhanced cancer risk. From 48 consecutive patients with gastric cancer who underwent a gastrectomy over a 3-year period (mean age 72.0 years; 29 M/19 F), at least two sections from antrum, corpus and tumour-surrounding mucosa were obtained for the examination of presence and subtypes of intestinal metaplasia (IM). It was found that 77.1% of the carcinomas were of the intestinal type and 22.9% of the diffuse type. The intestinal-type was more often found in males (P = 0.01); the mean age at diagnosis in this type was higher than in the diffuse cancer group (P = 0.004). There was a high prevalence of total IM in both the intestinal (75.7%) and diffuse group (88.9%). Type I IM was predominant in antrum and corpus of patients from both groups. Type III IM was only found among patients with intestinal-type carcinoma. However, its prevalence was rather low (26.3%). Therefore the absence of this lesion in patients with other risk factors cannot be used as an argument for lowering the degree of surveillance and its presence seems to be sufficient indication for long-term follow-up.     

Cancer prevention behaviors and socioeconomic status among Hispanics and non-Hispanic whites in a rural population in the United States

OBJECTIVES: Socioeconomic status is explored as a predictor of differences between Hispanics and non-Hispanic Whites in cancer prevention behavior.METHODS: In a cross-sectional study, in-person interviews (n = 1795) were conducted in a population-based random sample of adults in 20 communities with a high proportion of Hispanics.RESULTS: Hispanics were significantly less likely than non-Hispanic Whites to ever have had cervical (p < 0.001), breast (p = 0.007), or colorectal cancer (FOBT p = 0.008; sigmoidoscopy/colonoscopy p < 0.002) screening. After adjusting for socioeconomic status (education and having health insurance), only differences in cervical cancer remained significant (p = 0.024). After adjusting for socioeconomic status, Hispanics had a significantly higher intake of fruits and vegetables per day (4.84 servings) than non-Hispanic Whites (3.84 servings) (p < 0.001); and fat behavior score was marginally significant after adjustment for socioeconomic status (p = 0.053). Significantly fewer Hispanics were current smokers than non-Hispanic Whites (p < 0.001).CONCLUSIONS: There is only limited support for the hypothesis that socioeconomic status is a major determinant of some cancer-related behaviors; specifically, socioeconomic status is related to mammography and colorectal screening, but not cervical cancer, dietary behavior, or smoking.     

Bcl-2和p16蛋白在胃癌组织中的表达及意义

目的:观察癌基因Bcl-2和抑癌基因p16相关产物蛋白在胃癌组织中的表达,探讨Bcl-2和p16基因与胃癌发生的关系。方法:用免疫组化法检测Bcl-2和p16蛋白在不同类型胃癌组织中的表达,并以胃黏膜异型增生和肠上皮化生作对照。结果:Bcl-2蛋白在胃癌和异型增生组织中的阳性率无显著性差异(P>0.05),但是显著高于肠上皮化生(P<0.01);p16蛋白在胃癌、异型增生和肠上皮化生组织中的表达有非常显著的差异(P<0.01)。结论:在胃癌组织中Bcl-2表达显著增高,而p16表达显著减低,提示两种蛋白表达变化可能与胃癌相关,Bcl-2可能是胃癌发生的早期指标,p16基因的缺失可能与细胞异型性有密切关系。     

放大内镜和内镜窄带光成像下胃癌病变的特点及与病理分型的关系

目的探讨放大内镜和内镜窄带光成像(ME-NBI)下的胃癌患者病变特点与其病情诊断及病理分型的关系。方法选取2019年1月至2020年12月间沈阳市苏家屯区中心医院收治的120例胃癌患者作为研究对象,病理结果显示,慢性胃炎级肠上皮化生患者34例,低级别上皮内瘤变患者35例,早癌患者32例,浸润癌患者19例,分别对患者开展放大成像的窄带光成像、醋酸处理后的窄带光成像以及联合诊断分析,分析胃癌患者ME-NBI下的病变特点与其病情诊断及病理分型的关系。结果通过对三种诊断手段的图像质量分析,三组诊断手段的图像质量比较,差异有统计学意义(P <0.05)。经过两两比较,患者的三种诊断方式的图像质量从高到低依次为联合组、ME-NBI组以及NBI组,差异均有统计学意义(均P <0.05)。通过对三种诊断手段的诊断情况进行分析,三种诊断方式与病理诊断结果的一致性较强,差异有统计学意义(P <0.05)。通过对患者的病理分型与微腺管、微血管以及分界线的相关性分析,患者的病理分型与微腺管、微血管以及分界线呈现显著相关,差异有统计学意义(P <0.05)。进一步分析显示,慢性胃炎及肠上...