Prognostic value of MCM2 immunoreactivity in stage T1 transitional cell carcinoma of the bladder

OBJECTIVE: Due to the heterogeneous biologic behavior of stage T1 bladder carcinomas, there is a need for new markers allowing to assess the prognosis more accurately. To our knowledge, there are no reports on studies investigating minichromosome maintenance protein 2 (MCM2) expression in bladder carcinomas. Thus, we investigated the prognostic value of MCM2 immunoreactivity in stage T1 bladder tumors. METHODS: Fifty-four tumors were analyzed using Biochip microarrays. Also p53 and Ki67 antigen expression were examined. Immunohistochemical scores were compared with the clinical outcome. RESULTS: During a median follow-up of 43 months, tumor recurrence was registered in 43 and progression to stage T2 in 19 patients. Kaplan-Meier curves demonstrated that high-level MCM2 expression was significantly associated with early tumor recurrence when using a cutoff of 60% (p=0.0035 by log-rank test), and with early tumor progression when using a cutoff of 20% (p=0.0454). There was no relationship (p=0.604) between MCM2 and p53, but a tendentious relationship (p=0.082) between MCM2 and Ki67 antigen expression. MCM2 (p=0.006), Ki67 antigen (p=0.035) and p53 expression (p=0.049) as well as tumor grade (p=0.026) and age (p=0.025) were found significantly associated with recurrence-free survival by univariate Cox regression analysis, among which only Ki67 antigen expression (p=0.015) and age (p=0.019) proved to be of independent predictive value by multivariate analysis. Concerning tumor progression, MCM2 expression was identified as the only predictive parameter by log-rank test, but it was not of independent predictive value by multivariate analysis (p=0.101). CONCLUSION: Our data suggest that MCM2 expression may bear some prognostic relevance in stage T1 bladder carcinomas.     

Cyclooxygenase-2 expression in bladder cancer: correlation with poor outcome after chemotherapy

OBJECTIVES: Cycylooxygenase-2 (Cox-2) has been shown to play a significant role in the carcinogenesis of various human tumours. Recent experimental work suggests that Cox-2 expression may reduce the cytotoxic effects of chemotherapy and radiation therapy. We examined Cox-2 expression in bladder cancer and its relationship to clinicopathologic factors, survival data, and outcome in patients receiving cisplatin-based chemotherapy.METHODS: In 157 patients after cystectomy for bladder cancer, Cox-2 was assessed immunohistochemically; 62 patients had received chemotherapy, either adjuvant or for metastatic disease. Results were correlated with clinical data, survival and outcome of chemotherapy.RESULTS: Cox-2 expression was present in 131 patients (83.4%). Expression did not correlate with tumour stage and histologic grade, but was significantly related to histologic subtype (TCC vs. SCC, p=0.038). Survival analysis showed no relation between Cox-2 expression and overall and disease-free survival; however, in the subgroup of 62 patients who received chemotherapy, strong Cox-2 expression significantly correlated with poor overall survival (p=0.01).CONCLUSIONS: High expression of Cox-2 in bladder cancer patients receiving chemotherapy was significantly associated with shorter survival. Further studies are warranted to clarify if combining chemotherapy with Cox-2-inhibition has an impact on response and survival rates.     

Prognostic values of p53 and HER-2/neu coexpression in invasive bladder cancer in Taiwan

OBJECTIVES: To explore the clinical significance of p53 and HER-2/neu coexpression by immunohistochemistry in patients with invasive bladder cancer in Taiwan. METHODS: Paraffin-embedded tumor blocks were obtained from 67 patients with invasive bladder cancer subjected to radical cystectomy, bilateral lymph node dissection, and urinary diversion with or without systemic chemotherapy. Two observers (N.H.C. and T.S.T.), blinded to clinical outcome, reviewed the immunohistochemical staining for p53 (PAb1801) and HER-2/neu (Ab-17). The results were analyzed for progression-free survival and patient survival. RESULTS: Positive staining for p53 and HER-2/neu was found in 30 (44.8%) and 39 (58.2%) patients. In contrast to HER-2/neu, p53 expression was significantly associated with tumor grade and pathologic stage (p = 0.040 and 0.004, respectively), and tended to be related to the nodal status (p = 0.080). Most importantly, coexpression of p53 and HER-2/neu significantly correlated with nodal metastases (p = 0.020). Univariate and multivariate analysis revealed p53 and nodal status as two independent prognostic factors. Additionally, patients with p53 and HER-2/neu coexpression had the shortest time to relapse and overall survival, irrespective of whether adjuvant chemotherapy was given or not (p = 0.005 and 0.030). CONCLUSIONS: In invasive bladder cancer, p53 was an important prognostic factor since its expression correlated with tumor grade and stage, even nodal status, whereas HER-2/neu did not show prognostic significance. Tumors with p53 and HER-2/neu coexpression were associated with nodal metastases, probably resulting in decreased progression-free survival. Although some basic studies provide some important supports, studies including larger patient cohorts would still be required to prove the hypothesis that p53 and HER-2/neu-coexpressing tumors have a worse prognosis and are more resistant to a cisplatin-based multidrug regimen.     

Tissue microarray based analysis of prognostic markers in invasive bladder cancer: much effort to no avail?

PURPOSE: To evaluate altered protein expression with tissue microarray methodology for 15 different markers with potential prognostic significance in invasive bladder cancer. MATERIALS AND METHODS: Invasive tumor was sampled with the tissue-arraying instrument in 133 consecutive patients who underwent radical cystectomy, and at least 3, 0.6-mm tissue cores were obtained. With immunohistochemistry, the expressions of TP53, RB1, CDKN1A (p21), MKI67 (Ki67), PTGS2 (Cox-2), CTNNA1 (alpha-catenin), CTNNB1 (beta-catenin), AKT, PTEN, RHOA, RHOC, STAT1, VEGFC, EGFR, and ERBB2 (HER2) were quantified, and correlations were made with tumor grade, pathologic stage, lymph node status, and disease-specific survival. RESULTS: Decreased immunohistochemical expression of CTNNA1 and of PTEN correlated with higher pathologic tumor stages (P = 0.01 and P = 0.01, respectively), whereas increased AKT1 and ERBB2 correlated with lower pathologic tumor stages (P = 0.01 and P = 0.03, respectively). Increased RHOA expression was more common in grade 3 than in grade 2 tumors (P = 0.016). There were no other correlations among the 15 factors studied and pathologic stage, lymph node status, or tumor grade. No association was found between bladder cancer death and altered marker status for any of the markers studied. CONCLUSIONS: Currently, there are reasons to have a skeptical attitude toward the value of tissue microarray based immunohistochemistry as a method for evaluating prognostic markers in invasive bladder cancer. In this study, 15 antibodies were tested but were found to be of little clinical value. Whether this negative finding is related to the group of patients or factors studied, or the methodology is unclear.     

Prognostic significance of histopathological grading and immunoreactivity for p53 and p21/WAF1 in grade 2 pTa transitional cell carcinoma of the urinary bladder

OBJECTIVE: At present, there are no predictors of tumour behaviour for grade (G) 2 pTa transitional cell carcinomas (TCC) of the bladder. Here we analyse the prognostic relevance of histopathological grading and the immunohistochemical detection of p53 and p21/WAF1. METHODS: 70 patients were newly diagnosed with G2 pTa TCC of the bladder based on transurethral resection specimens. Two pathologists, blinded with respect to the clinical outcome, confirmed the initial grade and subclassified the G2 lesions into G2a and G2b carcinomas based on the degree of nuclear atypia and the number of mitoses. Immunoreactivity for p53 and p21/WAF1 was evaluated semiquantitatively. RESULTS: There were 52 G2a and 18 G2b tumours, mean follow-up was 49.2 months. Of all patients, 31.4% remained tumour-free, 48.6% recurred with the same tumour grade and stage, and 20.0% showed tumour progression. Patients with G2a tumours developed tumour progression in 13% in contrast to 39% with G2b lesions (p = 0.037). Of 21 p53-positive tumours, 33% (7/21) developed progressive disease, whereas 14% (7/49) of p53-negative patients showed tumour progression (p = 0.102). Neither p21/WAF1 expression alone nor the combination of p53 and p21/WAF1 correlated with clinical outcome. CONCLUSION: The more detailed grading system but not p53 or p21/WAF1 immunohistochemistry was found to be an independent prognostic factor for tumour progression.     

Fascin is a predictor for invasiveness and recurrence of urothelial carcinoma of bladder

ObjectivesTo evaluate the expression of fascin in bladder urothelial carcinoma, and to analyze its association with clinicopathologic features and prognosis of urinary bladder urothelial carcinoma.Materials and methodsImmunohistochemistry was used to detect the expression of fascin, Ki-67, p53, CK20, and multidrug resistance gene (MDR) in 111 bladder urothelial carcinoma and 42 normal epithelial tissues. The association between fascin expression and clinicopathologic parameters and prognostic factors on tumor recurrence was analyzed by Kaplan-Meier method, log-rank test, and Cox proportional hazards model.ResultsNinety-four of 111 cases of bladder urothelial carcinoma showed positive fascin expression, while no fascin expression was detected in normal transitional epithelium. There was a significant difference in the expression of fascin in normal epithelium and bladder urothelial carcinoma (P = 0.000). Fascin expression was positively correlated with pT stage (P = 0.001) and tumor size (P = 0.011), while it had no association with age, gender, and tumor grade (P > 0.05). pT stage and the expression of fascin, Ki-67, p53, and CK20 were significantly correlated with urothelial carcinoma recurrence, and fascin expression was an independent factor predicting tumor recurrence.ConclusionsFascin expression was up-regulated in bladder urothelial carcinoma. Over-expression of fascin might play an important role in invasiveness and recurrence of bladder urothelial carcinoma. Fascin may be used as a prognostic marker and a new target for the treatment of bladder urothelial carcinoma.     

Diabetes mellitus: does it impair urinary continence after radical cystoprostatectomy and ileal orthotopic bladder substitution?

OBJECTIVE: To assess the effect of diabetes mellitus (DM) on urinary continence after radical cystoprostatectomy and ileal orthotopic bladder substitution. METHODS: Patients with DM undergoing radical cystoprostatectomy and ileal orthotopic bladder substitution without prior radiotherapy and with a minimum follow-up of 12 mo were identified from our database. Twenty-two men met the inclusion criteria and were randomly matched to 22 nondiabetic controls for age, ileum length used for reservoir construction, attempted nerve-sparing surgery, pathologic tumour stage, and pathologic lymph node status to assess the effect of DM on urinary continence. RESULTS: All 22 diabetic patients suffered from type 2 DM. Twelve were treated with oral antidiabetics and 10 required insulin. Daytime continence was significantly worse in the diabetic patients compared to nondiabetic controls 3 mo (odds ratio [OR] 21; 95% confidence interval [CI], 2.4-185; p=0.001) and 6 mo (OR 17.5; 95% CI, 2-154; p=0.002) postoperatively. Thereafter no significant difference was detectable. In diabetic patients nighttime continence was worse. The difference was statistically significant at 3 mo (OR 7.3; 95% CI, 1.9-28; p=0.002), 6 mo (OR 9.1; 95% CI, 2.3-36; p=0.001), 12 mo (OR 7.1; 95% CI, 1.9-27; p=0.003), and 24 mo (OR 5.7; 95% CI, 1.3-26; p=0.018) after surgery. CONCLUSIONS: Patients with DM take longer to regain daytime and, even more so, nighttime continence than nondiabetic patients. Diabetic patients undergoing radical cystoprostatectomy should be informed of the potential negative impact of DM on the recovery of urinary continence after an ileal orthotopic bladder substitution.     

The predictive value of muscularis mucosae invasion and p53 over expression on progression of stage T1 bladder carcinoma

PURPOSE: We determine the significance of muscularis mucosae invasion and nuclear p53 over expression on the progression of stage T1 transitional cell bladder cancer. MATERIALS AND METHODS: The pathological findings in 149 cases of T1 tumors diagnosed between 1973 and 1996 were reviewed. Diagnosis was stage T1 in 94 tumors in which the muscular layer was clearly identifiable and disease-free. Mean followup was 64.9 months (range 5 to 288). T1 bladder cancers were subclassified into 2 groups, with (T1b) or without (T1a) muscularis mucosae invasion. The p53 nuclear antibody immunoreactivity was determined with antibody D07 and a cutoff point at 15%. RESULTS: T1 subclassification was possible in all 94 patients. Of all tumors 37.2% expressed p53 nuclear over expression. Univariate statistical analysis showed that p53 expression (p <0.05) and tumor invasion depth (p <0.001) significantly correlated with progression. However, on multivariate analysis only invasion depth (p <0.0001) and associated carcinoma in situ (p <0.03) remained independently significant as predictors of progression. CONCLUSIONS: In our study the depth of tumor invasion was a significant independent predictor of progression in patients with T1 bladder cancer. This result suggests that the depth of invasion in stage T1 should be included in the histopathological report.     

Expression of the cyclin-dependent kinase inhibitor p27 in transitional cell bladder cancers: Is it a good predictor for tumor behavior?

OBJECTIVES: Progression of the cell cycle is regulated by the interactions of cyclins, cyclin dependent kinases (CDKs) and CDK inhibitors (CDKIs). p27 is a member of the universal cyclin-dependent kinase inhibitor family. The level of p27 protein expression decreases during tumor development and progression in some epithelial, lymphoid and endocrine tissues. It has been suggested that p27 is an independent prognostic factor in various human cancers. The prognostic value of p27 protein expression is not completely understood in bladder cancer yet. AIMS: To investigate the immunohistochemical expression of p27 in transitional cell bladder cancers and its relationship with clinicopathological data, proliferating cell nuclear antigen (PCNA) and p53 oncoprotein immunoreactivity. METHODS: The expression of p27 protein was immunohistochemically analyzed in paraffin-embedded specimens of 75 patients with transitional cell carcinoma of the bladder. p27 expression was compared with tumor grade, stage, growth pattern, disease-free survival, progression, PCNA and p53 immunoreactivity. RESULTS: Expression of p27 was not significantly related to clinicopathologic parameters, disease-free survival, progression, PCNA and p53 immunoreactivity. CONCLUSION: The results indicate that p27 is not a good predictor for outcome of transitional cell carcinoma of the bladder.     

An investigation into the prognostic significance of necrosis and hypoxia in high grade and invasive bladder cancer

PURPOSE: We investigated hypoxia and necrosis in high grade and invasive bladder cancer, and related this to prognosis. MATERIALS AND METHODS: We performed a retrospective observational study of 98 primary cystectomy specimens scored for necrosis, and the hypoxia associated markers carbonic anhydrase IX, hypoxia-inducible factor 1 alpha and 2 alpha, and Bcl2/adenovirus EIB 19 kDa interacting protein 3. Tumor tissue array was used with cores taken from representative and perinecrotic tumor regions. Necrosis was scored on whole sections as absent, less than 5 mm (comedo) or more than 5 mm (gross). RESULTS: Of the 98 cases analyzed followup data were available on 91. Median followup was 22 months (IQR 8-35). Stage was T0/1 to T4 in 18, 20, 41 and 12 cases, respectively. The prevalence of necrosis in bladder cancer was high and it increased with stage (17%, 30%, 70% and 71% at stages T0/1 to T4, respectively). Necrosis was significantly associated with stage (p = 0.0001) and nodal status (p = 0.016). Hypoxia-inducible factor 1 alpha showed no association with stage, grade or nodal status. Hypoxia-inducible factor 1 alpha and carbonic anhydrase IX showed a significant association with necrosis, whereas hypoxia-inducible factor 2 alpha and Bcl2/adenovirus EIB 19 kDa interacting protein 3 did not. Stage (p <0.0001), necrosis (p <0.0001) and intense hypoxia-inducible factor 1 positivity (p = 0.048) were the only significant prognostic factors on univariate analysis. Stage (HR 3.29, 95% CI 1.80-6.04, p <0.001) and necrosis (HR 1.92, 95% CI 1.05-3.51, p = 0.04) were independent prognostic factors on multivariate analysis, while hypoxia-inducible factor 1 lost significance (HR 1.36, 95% CI 0.98-1.88, p = 0.07). Node status was only reported in 45% of cases. CONCLUSIONS: Necrosis (the presence and amount) in high grade and invasive bladder cancer is an independent prognostic risk factor.     

IMMUNOHISTOCHEMICAL DETECTION OF p53 PROTEIN OVEREXPRESSION VERSUS GENE SEQUENCING IN URINARY BLADDER CARCINOMAS

PURPOSE: Mutations of p53 tumor suppressor gene and nuclear accumulation of p53 protein are common in bladder tumors. The prognostic significance of p53 alterations in bladder tumors has not been established. The aim of the present study was to evaluate an immunohistochemical (IHC) method for the routine determination of p53 protein overexpression in human bladder tumors and to determine the relation between nuclear accumulation of p53 with the traditional prognostic indicators and patient survival. MATERIALS AND METHODS: 104 transitional cell carcinomas of the bladder were analyzed simultaneously by immunohistochemistry for p53 protein overexpression and direct DNA sequencing for p53 gene mutations. RESULTS: The overexpression of p53 protein was reported in 30.8% of the cases and mutations of p53 gene in 23.0%. A significant association was observed between p53 alterations established either by IHC or direct DNA sequencing and stage (p<0.0001), grade (p<0.001), vascular invasion (p = 0.0005), DNA ploidy (p = 0.0002) and carcinoma in situ (p<0.0001). The correlation between the p53 gene mutations and p53 nuclear reactivity as detected by IHC was highly significant (p<0.0001). Univariate statistical analysis showed that the expression of p53 was significantly correlated to poor prognosis (p<0.0001). However, in multivariate analysis, only stage was significantly correlated to prognosis (p<0.0001). CONCLUSIONS: The IHC method was highly sensitive and specific and simple to apply for the routine examination of p53 overexpression in bladder tumors. However, overexpression of p53 as determined immunohistochemically, does not appear to have a better predictive prognostic value than stage in bladder tumors.     

肿瘤最大径最佳截点与结直肠癌临床特点及预后的关系

目的：分析结直肠癌肿瘤最大径最佳截点及其与患者临床病理特点及预后的关系。方法：选择2006年1月—2012年7月行结直肠癌根治术与术后行规范化辅助治疗的结直肠癌患者 119例的临床资料。采用Kaplan-Meier生存分析方法,筛选结直肠癌肿瘤最大径的最佳截点值;分析肿瘤最大径与结直肠癌患者临床病理因素的关系,并分析结直肠癌患者预后影响因素。结果：以最大径4 cm为截点,两侧患者生存率差异最明显（65.5% vs. 51.1%,χ2=9.922,P=0.002）,故确定结直肠癌肿瘤最大径最佳截点值为4 cm。肿瘤最大径<4 cm患者与≥4 cm患者在肿瘤T分期、淋巴结检出总数、血清CEA方面差异有统计学意义（均P<0.05）。单因素分析显示,肿瘤最大径、T分期、M分期、血清CEA水平、是否输血与结直肠癌预后有关（均P<0.05）;多因素分析表明,肿瘤最大径、T分期、是否输血是结直肠癌预后的独立影响因素（均P<0.05）;按肿瘤最大径分层分析,T分期是≥4 cm患者预后的独立影响因素（HR=2.244,95% CI=1.079~4.665,P=0.030）,但以上因素对肿瘤最大径<4 cm患者预后影响不明显（均P>0.05）。结论：肿瘤最大径可作为影响结直肠癌预后的独立影响因素,其最佳截点值为4 cm,参照该截点值,有助于对患者临床特点及预后作出判断。

     

Histological determinants of survival in completely resected T1-2N1M0 nonsmall cell cancer of the lung

BACKGROUND: The histologic determinants of survival after surgical resection of stage II nonsmall cell lung cancer are poorly understood. We analyzed the prognostic significance of a number of histologic features after complete resection of T1-2N1M0 nonsmall cell cancer of the lung. METHODS: The case notes and histology of all patients who underwent a potentially curative surgical resection for T1-2N1M0 nonsmall cell carcinoma of the lung between 1991 and 1997 were reviewed retrospectively. The following histologic factors were recorded: histologic type of tumor; number of nodes with metastatic deposits together with their nodal station; the presence of vascular invasion, visceral pleural involvement, and cellular necrosis; and grade of tumor. The results from 98 patients were analyzed. Univariate and multivariate analyses were performed to identify prognostic factors. RESULTS: Univariate analysis showed that only three factors had a statistically significant correlation with a poor prognosis: vascular invasion (p = 0.002), nonsquamous histology (p = 0.005), and visceral pleural involvement (p = 0.002). Multivariate analysis revealed that all three factors were significant independent adverse prognostic indicators. CONCLUSIONS: Visceral pleural involvement, nonsquamous histology, and vascular invasion are all significant adverse prognostic factors after surgical resection of T1-2N1M0 nonsmall cell cancer of the lung. These findings conflict with previously published reports, and we advocate a prospective, large-scale study in order to clarify the prognostic significance of histologic characteristics in stage II disease.     

Ⅱ型环氧合酶在膀胱移行细胞癌中的表达及与肿瘤血管发生的关系

目的:研究Ⅱ型环氧合酶(Cox -2)在膀胱移行细胞癌中的表达,探讨它与膀胱癌病理分级及临床分期的关系及其临床意义,并研究它与血管内皮细胞生长因子(VEGF)及微血管密度(MVD)表达的关系,从而探讨Cox- 2在膀胱肿瘤血管发生中所起的作用。方法:应用免疫组化方法检测Cox- 2、VEGF及MVD在94 例膀胱移行细胞癌、12例膀胱良性病变和5例膀胱癌旁正常组织中的表达。结果:Cox- 2的表达随着膀胱癌分级分期的上升而呈上升趋势(P<0.05);在膀胱癌中,Cox 2 表达与VEGF表达( r=0.716, P=0.000)关系十分密切,与MVD表达存在明显相关性( r=0.458,P=0.000)。结论:Cox- 2在膀胱癌中均为高表达,它的表达参与了肿瘤的发生及恶性进展,并且与膀胱肿瘤新生血管发生有着密切关系。     

Significance of immunohistochemical expression of cyclooxygenase-2 in squamous cell carcinoma of the esophagus

BACKGROUND: The focus of studies on cyclooxygenase-2 (COX-2) have been on its ability to mediate the biological behavior of human tumors including tumorigenesis, tumor progression, apoptosis, and differentiation. The aim of the current study was to elucidate a further finding on the clinicopathologic significance of immunohistochemical expression of COX-2 in esophageal squamous cell carcinoma (ESCC). METHODS: The immunohistochemical expression of COX-2 was examined for 76 specimens of ESCC and the correlation of COX-2 expression with clinicopathologic features was examined. RESULTS: Twenty-eight ESCCs (36.8%) had a strong expression of COX-2. The proportion of poorly differentiated SCCs among tumors with a strong expression of COX-2 (42.8%, 12 of 28) was significantly higher than that among tumors with a weak expression of COX-2 (16.7%, 8 of 48; P = .037). The depth of the tumors (P = .003) and the stage of the tumors (P = .015) were advanced significantly more progressively in ESCCs with a strong COX-2 expression. Univariate analysis showed that the prognosis of patients with ESCCs with a strong COX-2 expression was significantly poorer than that of patients with ESCCs with a weak COX-2 expression (P = .017). Multivariate analysis showed that only such tumor-related factors as lymphatic invasion (P = .004), venous invasion (P = .003), and stage of the tumors (P = .021) were found to be associated independently with worse prognosis of the patients with ESCC. CONCLUSIONS: Strong expression of COX-2 is correlated with tumor progression and poor differentiation in ESCC.     

p53 expression predicts progression and poor survival in T1 bladder tumours

OBJECTIVES: Histological grade (G) is the only parameter proved to have prognostic value for progression in T1 transitional cell carcinoma (TCC) of the bladder, although it is considered inaccurate to make clinical decisions on individuals. The aim of the present study was to evaluate the prognostic relevance of p53 expression in T1 TCC of the bladder. METHODS: Clinical records of 207 patients with T1 TCC of the bladder were reviewed for clinical parameters reported to influence the evolution of superficial bladder cancer. Among these 207 patients, 40 developed muscle-invasive disease (20 G2 and 20 G3). A retrospective case-control study was then carried out comparing the latter 40 tumours with 40 control tumours matched by grade, sex, age, number and size of the tumours, chemical exposure and presence of carcinoma in situ. p53 immunostaining with monoclonal antibody was performed in these two groups. RESULTS: Histological grade was the only clinical parameter that influenced evolution. p53 expression correlated with tumour progression, since it was observed in 21 out of 24 p53-positive tumours and in only 20 of 56 p53-negative tumours (p<0.0001), showing a specificity of 93. 5% and a sensitivity of 53%. p53 expression correlated as well with patient survival, being 39% in patients with p53-positive tumours and 80% in patients with p53-negative tumours at 60 months (p<0. 0001). CONCLUSIONS: p53 protein expression has prognostic value for survival and progression in T1 bladder tumours and can be used for early detection of poor-prognosis T1 bladder tumours.     

膀胱癌中bcl-2和p16基因的表达与预后的关系

目的 探讨ｂｃｌ－２和Ｐ１６基因蛋白在膀胱癌的表达与预后的关系。方法 采用ＳＡＢＣ法对５１例膀胱癌组织和５例正常膀胱粘膜行ｂｃｌ－２和Ｐ１６基因表达的检测。结果 ｂｃｌ－２在膀胱癌的阳性表达率为８０．２％,生存组和死亡组之间比较差异有显著性意义。Ｐ１６在膀胱癌在阳生表达率为５０．９％。５例正常膀胱粘膜均阳性,两者比较有显著性意义。在病理分级、临床分期和预后的总样本率中比较差异有显著性意义;即随病理     

IA期乳腺癌临床病理特征及预后相关因素分析

目的：探讨IA期乳腺癌患者的临床病理特征与预后因素。 方法：回顾性分析2004年1月—2009年12月天津医科大学肿瘤医院收治的156例IA期（T1N0M0,）乳腺癌患者的临床病理资料。 结果：156例患者均为女性;病理类型以浸润性导管癌为主（115例,73.7%）;原发肿瘤大小以T1c居多 （77例,49.4%）;组织学分级以II级（79例,50.6%）及III级（58例,37.2%）为主。5年无进展生存（PFS）为93.3%,5年总生存（OS）为99.1%。单因素分析结果显示,组织学分级、Ki-67表达及淋巴脉管侵犯与患者的PFS有关（均P<0.05）;多因素分析显示,组织学分级及Ki-67表达情况是影响患者PFS的独立预后因素（均P<0.05）。 结论：IA期乳腺癌患者虽然总体预后较好,但对于某些亚组患者而言,预后较差,该类患者的复发转移风险较大。