Prognostic effect of number of lymph nodes sampled in patients with stage Ⅰ non-small cell lung cancer

Objective To investigate the prognostic effect of quantity of lymph node(LN)resected in operations of patients with stage Ⅰ non-small cell lung cancer(NSCLC).Methods The clinical, pathological and follow-up data of 74 patients with stage Ⅰ NSCLC who were treated with surgery from January 1998 to December 2002 Beijing Friendship Hospital, Affiliated to Capital Medical University were reviewed retrospectively.Grouping the patients, according to the quantity of lymph node resected, the Kaplan-Meier method and Cox proportional hazards model was used for univariate analysis and multivariate analysis of factors with prognostic effect.Results The five year survival rate and disease-free survival(DFS)rate of these 74 patients were 64.9% and 47.3%.The univariate analysis showed that tumor size(P =0.016),T-staging (P =0.008)and extent of lymph node dissection(P =0.013)could influence the survival rate.The 5-year OS and DFS rates of patients with less than 6 LNs resected were less than the other group(more than 6 LNs)apparently.The multifactorial analysis indicated that other than staging, the quantity of lymph node resected was also an influence factor of prognosis.Conclusions The OS rate of patients has positive correlation with quantity of lymph node resected in operations.Six LNs must be resected leastways in operations of patients with stage Ⅰ NSCLC.     

淋巴结检出数和淋巴结转移度对Ⅱ～Ⅲ期结直肠癌患者预后的影响

目的 探讨淋巴结检出数和淋巴结转移度（LNR）对Ⅱ～Ⅲ期结直肠癌患者预后的影响.方法 回顾性分析507例Ⅱ～Ⅲ期结直肠癌患者的临床病理资料和随访资料.结果 507例患者共计检出淋巴结5801枚;转移淋巴结1122枚;淋巴结转移数与检出数呈正相关（r=0.171,P＜0.01）.淋巴结检出数大于或等于12枚与小于12枚的Ⅱ期患者,5年生存率分别为80.5%和62.7%,差异有统计学意义（P＜0.01）;而Ⅲ期患者则差异无统计学意义（P＞0.05）.不同LNR的Ⅱ～Ⅲ期结直肠癌患者5年生存率差异有统计学意义（P＜0.01）.不同淋巴结转移区域的同一LNR组患者的5年生存率差异也有统计学意义（P＜0.05,P＜0.01）.结论 淋巴结检出数对Ⅱ期结直肠癌患者预后的影响更为明显.为了获得更准确的分期及更好的预后,术中应尽量检出12枚/例以上淋巴结.LNR是Ⅱ～Ⅲ期结直肠癌的预后因素,用其评估患者预后时应兼顾淋巴结转移区域.     

Association of hypoxia-inducible factor 1α expression with microlymphatic vessel density and lymph node micrometastasis in rectal cancer

Objective To explore the association of the expression of hypoxia-inducible factor 1α (HIF-1α) with microlymphatic vessel density (MLVD) and lymph node micro-metastasis in rectal cancer.Methods The experimental group consisted of 40 middle-low rectal cancer specimens pathologically confirmed at the First Affiliated Hospital of Anhui Medical University between 2000 and 2003.Forty samples of normal tissues taken from the corresponding area around the cancer were used as the control group. Immunohistochemistry was used to detect HIF-1α expression and MLVD in both the tumor tissues and the adjacent normal tissues. Lymph node micrometastasis was ascertained using immunohistochemical staining with CK20. Results In rectal cancer tissues, the HIF-lα expression was 77 386±14 911 and MLVD was 7.3±0.7, significantly higher than those in normal adjacent tissues(33 092±5877 and 0.3±0.2, both P＜0.01). The HIF-1α expression was positively correlated with MLVD in rectal cancer (r=0.781, P＜0.01). Thirty-one patients had no lymph nodes metastasis and 10 had micrometastasis. The HIF-1α expression and MLVD in specimens with lymph node micrometastasis was significantly higher than that in those without lymph node micrometastasis(P＜0.05). Conclusion HIF-1α and MLVD play important roles in the development of rectal cancer, which may promote lymphatic micrometastasis in rectal cancer.     

Effectiveness of improvement of celiac artery and its branch's lymph node dissection approach for gastric carcinoma in stage ⅢC

目的 探讨胃癌ⅢC期腹腔动脉系淋巴结清扫径路改进的临床效果.方法 对胃癌ⅢC期腹腔动脉系淋巴结清扫径路改进65例(A组)与胃癌ⅢC期腹腔动脉系传统淋巴结清扫径路68例(B组)的临床效果进行比较.结果 A、B两组手术时间分别为( 180±28) min、(220±30) min,P＜0.01;出血量分别为(355±85)ml、(450±95) ml,P＜0.05;淋巴结清除数分别为(28±5)枚、(22±4)枚,P＜0.05;根治性切除率分别为98.4％、85.3％,P＜0.01.结论 A组腹腔动脉系淋巴结清扫径路能使腹腔动脉系淋巴结清扫容易化、缩短手术时间、减少出血量、增加淋巴结清除个数、提高ⅢC期胃癌根治性切除率.     

Comparative study of oncologic outcomes after multivisceral resection for stage ⅡC colorectal cancer between inflammatory and malignant adhesion

Objective To evaluate the differences in oncologic outcomes between inflammatory adhesion and malignant adhesion in patients with stage Ⅱ C colorectal cancer after multivisceral resection(MVR). Methods A retrospective review was undertaken of 287 patients who underwent MVR for stage Ⅱ C CRC, 120 patients for stage Ⅱ B, and 140 patients for Ⅲ A. Patients were divided into two groups: inflammatory adhesion(IA) and malignant invasion(MI). Results There were 153 patients with colon cancer and 135 patients with rectal cancer in the stage Ⅱ C group. The overall survival was significantly lower in the MI group at 5 years (38.5% vs. 59.4%, P＜0.05). Stage ⅡC patients with IA had similar survival rate to the patients with stage Ⅱ B CRC. Compared to the MA group,patients with stage Ⅲ A CRC showed significant differences in 5 years overall survival rate. Univariate analysis showed that differentiation, adhesion pattern, and complication were significant prognostic factors for patients with colon cancer, while pathological characteristics, adhesion pattern, and differentiation were significant for rectal cancer. Conclusions MI is an adverse prognostic factor for patients with stage Ⅱ C CRC. T4 should be further classified according to the adhesion pattern.     

Ⅲ期结直肠癌淋巴结转移比率与预后的关系

目的 探索Ⅲ期结直肠癌的淋巴结转移比率与其临床病理特征及预后的关系.方法 将247例Ⅲ期结直肠癌患者根据淋巴结转移比率(MLR)的中位数分为3个组:低比率组(≤0.21),中比率组(＞0.21 ～0.42),高比率组(＞0.42).分析比较各组的临床病理因素和5年生存率的差别,并采用Cox比例风险模型分析Ⅲ期结直肠癌预后的相关因素.结果 247例Ⅲ期结直肠癌的淋巴结转移比率为0.02～1.00,中位数为0.21,在低比率组中,高中分化的结直肠癌的所占比例(57.9％,113/195)明显高于低分化癌的比例(23.1％,12/52)(P＜0.01);≥12枚病检淋巴结的结直肠癌所占比例(56.5％,95/168)明显高于＜12枚淋巴结的比例(38.0％,30/79)(P＜0.05).低比率组、中比率组、高比率组的5年生存率分别为67.4％,28.8％,6.3％,3组生存率存在明显差异(P＜0.05).多因素Cox回归模型分析表明,淋巴结转移比率是Ⅲ期结直肠癌预后的重要因素.结论 MLR是判断Ⅲ期结直肠癌预后的一个重要指标.     

Can axillary lymph node dissection be omitted in patients with breast cancer and positive sentinel nodes?

Sentinel lymph node biopsy has evolved as the surgical procedure of choice for women with clinically negative axillae, as part of an effort to move toward the less invasive surgical management of breast cancer. Axillary lymph node dissection remains the standard of care for patients with a positive axillary node and was previously performed on all patients with breast cancer prior to the implementation of the sentinel lymph node biopsy. There is, however, controversy regarding whether or not all patients with a positive sentinel lymph node need to undergo completion axillary dissection for either prognostic or therapeutic purposes. This article reviews the literature related to this controversial and evolving topic.     

Critical analysis of the 2010 TNM classification in patients with lymph node–positive bladder cancer: Influence of lymph node disease burden

ObjectivesIn 2010, a new TNM staging system was published by American Joint Committee on Cancer, changing the nodal classification to include the presence of common iliac lymph node (LN) involvement as N3 category. The objective of this study was to define the capability of the current TNM nodal classification to separate patients with different prognostic stages and to evaluate the effect of LN disease burden.Methods and materialsA total of 93 patients with metastatic LNs after radical cystectomy and extended LN dissection for urothelial carcinoma of the bladder between 1999 and 2012 were included. The median follow-up was 21.5 months. The correlation between N3 and indicators of LN disease burden was analyzed using the Spearman correlation coefficient. Recurrence-free survival (RFS) and overall survival (OS) analysis was performed using the Kaplan-Meier and Cox proportional hazards methods.ResultsThe presence of N3 disease was associated with higher number of metastatic LNs (7 vs. 2, P<0.01); however, this was highly variable and correlation coefficients between common iliac metastatic LNs and other lymphatic disease burden indicators demonstrated weak association (0.39–0.63). Patients with N1 lesions were found to have a distinct RFS and OS (P<0.01 and P = 0.01, respectively). A trend toward worse RFS (P = 0.07) and OS (P = 0.08) was observed in patients with N3 lesions. However, no difference in RFS or OS was found between patients with N2 and N3 lesions (P = 0.83 and 0.50, respectively).ConclusionsThe N3 category in the current TNM classification defines a group of patients with high but heterogeneous disease burden. This may be the explanation for its lack of prognostic stratification when compared with N2 category bladder cancer.     

Value of modified APACHE Ⅱ score in predicting postoperative complications in patients with acute obstructing colorectal carcinoma

Objective To evaluate the value of modified acute physiologic and chronic health score (APACHE Ⅱ score) in predicting postoperative complications in patients with acute obstructing colorectal carcinoma. Methods Postoperative complications in 92 patients with acute obstructing colorectal carcinoma were evaluated by APACHE Ⅱ score and modified APACHE Ⅱ score (severe organ dysfunction and immune damage in chronic health indicators were replaced by the duration and degree of obstruction, which were considered as the severity of intestinal obstruction). The sensitivity,specificity, and Youden index were compared with regard to complication prediction. Receiver operating characteristic curves were plotted to calculate area under the curve (AUC). Results Twnenty-five patients developed postoperative complications including 3 deaths. The APACHE-Ⅱ score (13.72±4.24), modified APACHE Ⅱ score (19.28±4.92), intestinal obstruction severity score (5.56±2.20) were significantly higher in patients with complications than those in patients without complications (10.58±3.44,14.69±3.73,4.10±1.52,al1 P＜0.01). The sensitivity, specificity, accuracy, Youden index, and AUC were 0.640, 0.940, 0.859, 0.580, and 0.839 for the modified APACHE-Ⅱ score with 20 being the optimal cut-off point, respectively, and were 0.560, 0.896, 0.804, 0.456, and 0.784 for APACHE- Ⅱ ( 14 was the optimal cut-off point), respectively. Conclusion The modified APACHE- Ⅱ score system with the intestinal obstruction severity score is a better prediction method for the occurrence of postoperative complications in patients with acute obstructing colorectal carcinoma.     

Demethylation of the γ-synuclein gene CpG island in colorectal cancer and its clinical significance

Objective To explore the relationship between γ-synuclein gene expression and CpG island demethylation in colorectal cancer (CRC), and the relationship between the demethylation and clinicopathological factors of CRC. Methods The expression of γ-synuclein mRNA was examined in 30 pairs of tumor tissues and tumor-matched non-neoplastic adjacent tissues (NNAT) by RT-PCR.CRC cell lines including COLO205, LoVo, and SW480 were used and treated with a demethylating agent, 5-aza-2'-deoxycytidine (5-aza-C). Before and after the treatment, the expression of γ-synuclein mRNA in the cells was determined by RT-PCR, and bisulfite sequencing PCR was also used to analyze methylation status of CpG island. The methylation status of γ-synuclein was then examined in 67 CRC samples and 30 NNAT samples by nested methylation-specific PCR (NMSP) and real time methylationspecific PCR (real-time MSP). The relationship between the demethylation of γ-synuclein in CRC and clinicopathological factors was analyzed. Results The mean γ-synuclein mRNA expression was 0.66±0.34 in CRC samples, which was much higher than 0.45±0.26 in NNAT samples (P=0.011). 5-aza-C could induce expression and demethylation of γ-synuclein in COLO205, LoVo and SW480 cells. Γ-Synuclein gene was demethylated in 80.0%(24/30) of the CRC samples and 50.0%(15/30) of the NNAT samples.The demethylated status of γ-synuclein was much higher in CRC samples than that in NNAT samples (P=0.030), and was significantly correlated with clinical stage, lymph node involvement, and distant metastasis of CRC (P＜0.05). Conclusion The upregulation of γ-synuclein expression in CRC is primarily attributed to the demethylation of CpG island, which may be used as a marker for prognosis.     

Demethylation of the γ-synuclein gene CpG island in colorectal cancer and its clinical significance

Objective To explore the relationship between γ-synuclein gene expression and CpG island demethylation in colorectal cancer (CRC), and the relationship between the demethylation and clinicopathological factors of CRC. Methods The expression of γ-synuclein mRNA was examined in 30 pairs of tumor tissues and tumor-matched non-neoplastic adjacent tissues (NNAT) by RT-PCR.CRC cell lines including COLO205, LoVo, and SW480 were used and treated with a demethylating agent, 5-aza-2'-deoxycytidine (5-aza-C). Before and after the treatment, the expression of γ-synuclein mRNA in the cells was determined by RT-PCR, and bisulfite sequencing PCR was also used to analyze methylation status of CpG island. The methylation status of γ-synuclein was then examined in 67 CRC samples and 30 NNAT samples by nested methylation-specific PCR (NMSP) and real time methylationspecific PCR (real-time MSP). The relationship between the demethylation of γ-synuclein in CRC and clinicopathological factors was analyzed. Results The mean γ-synuclein mRNA expression was 0.66±0.34 in CRC samples, which was much higher than 0.45±0.26 in NNAT samples (P=0.011). 5-aza-C could induce expression and demethylation of γ-synuclein in COLO205, LoVo and SW480 cells. Γ-Synuclein gene was demethylated in 80.0%(24/30) of the CRC samples and 50.0%(15/30) of the NNAT samples.The demethylated status of γ-synuclein was much higher in CRC samples than that in NNAT samples (P=0.030), and was significantly correlated with clinical stage, lymph node involvement, and distant metastasis of CRC (P＜0.05). Conclusion The upregulation of γ-synuclein expression in CRC is primarily attributed to the demethylation of CpG island, which may be used as a marker for prognosis.     

Risk factors for occult nodal metastasis in patients with stage ⅠA peripheral non-small cell lung cancer

Objective To study the risk factors of mediastinal lymph node metastasis in patients with ≤3 cm peripheral non-small cell lung cancer.Methods From January 2000 to December 2010,a total of 281 patients with NSCLC[152 men and 129 women,aged ( 60.31±12.13) years;≤ 3 cm in diameter]underwent lobectomy or partial resection with systematic mediastinal lymphadenectomy in hospital .Clinical data included age,gender,symptoms,history and quantity of smoking history,history of tumor,family history of tumor,site,diameter,calcification,speculation,border,lobulation,traction of pleural,vascular convergence sign,cavity were collected compaired and analyzed.Single and multi-variate analysis was performed to determine the independent risk of occult N2 nodal involvement.Results Logistic regression analysis show seven clinical characteristics (fleshless( OR:22.262),history of tumor(OR:5.485),diameter( 0R:3.788),density( OR;5.850),traction of pleural (OR:1.371),border ( OR:8.259) and cavity (OR:7.124) were risk factors.Conclusion Fleshless,history of tumor,diameter,density,traction of pleural and the border and cavity were independent predictors of malignancy in patients with ≤3 cm peripheral non-small cell lung cancer.     

Risk factors for occult nodal metastasis in patients with stage ⅠA peripheral non-small cell lung cancer

Objective To study the risk factors of mediastinal lymph node metastasis in patients with ≤3 cm peripheral non-small cell lung cancer.Methods From January 2000 to December 2010,a total of 281 patients with NSCLC[152 men and 129 women,aged ( 60.31±12.13) years;≤ 3 cm in diameter]underwent lobectomy or partial resection with systematic mediastinal lymphadenectomy in hospital .Clinical data included age,gender,symptoms,history and quantity of smoking history,history of tumor,family history of tumor,site,diameter,calcification,speculation,border,lobulation,traction of pleural,vascular convergence sign,cavity were collected compaired and analyzed.Single and multi-variate analysis was performed to determine the independent risk of occult N2 nodal involvement.Results Logistic regression analysis show seven clinical characteristics (fleshless( OR:22.262),history of tumor(OR:5.485),diameter( 0R:3.788),density( OR;5.850),traction of pleural (OR:1.371),border ( OR:8.259) and cavity (OR:7.124) were risk factors.Conclusion Fleshless,history of tumor,diameter,density,traction of pleural and the border and cavity were independent predictors of malignancy in patients with ≤3 cm peripheral non-small cell lung cancer.     

Predictors of adequate lymph node dissection in patients with non–muscle invasive bladder cancer undergoing radical cystectomy and effect on survival

IntroductionRadical cystectomy (RC) is the standard of care for refractory high-risk non-muscle invasive bladder cancer (NMIBC). We aim to identify predictors of adequate lymph node dissection (LND) in a cohort of NMIBC patients undergoing RC, as well as its impact on clinical outcomes.MethodsThe National Cancer Database was queried for patients who underwent RC for urothelial cell carcinoma for clinical stage Tis/a/1 N0M0 disease between 2004 and 2013. Patients were stratified by LND: none, inadequate (<10) or adequate (≥10 nodes). Factors associated with LND were analyzed. Inverse-probability weighted propensity score matching was used to assess the impact of adequate LND on overall survival.ResultsThe final cohort of 3,226 patients had a median follow-up of 39.0 months, had a mean age of 65.3 years, was 70% male, and was 81% Caucasian. Overall, 16.6% received no LND, 28.5% inadequate LND, and 55.0% adequate LND. Treatment at an academic facility, Charlson-Deyo Comorbidity score of 1, and later year of treatment were significantly associated with adequate LND. Overall survival was significantly higher with adequate LND compared to a matched-cohort of inadequate LND patients (68.7% vs. 60.6% at 5 years, P < 0.01).ConclusionsNearly half of NMIBC patients undergoing RC do not receive an adequate LND, despite an association with increased overall survival. Treatment at an academic facility was associated with increased likelihood of adequate LND. Initiatives to improve adequate LND in this population may be warranted.     

The prognosis and the impact of radiotherapy in clinically regional lymph node-positive prostate cancer: Which patients are candidates for local therapy with radiation?

BackgroundThis study aimed to identify the prognostic and predictive factors of local radiotherapy in clinically regional lymph node-positive prostate cancer.Patients and MethodsThis study includes patients who were newly diagnosed with regional lymph node-positive prostate cancer between 2008 and 2017. We investigated the prognostic value of clinicopathological parameters for progression-free survival (PFS) and overall survival (OS) as well as the differential prognostic impact of radiotherapy by subgroup analysis.ResultsAmong the 93 men enrolled as patients, 48 (51.6 %) were treated with radiotherapy. The biopsy positive core rate and biopsy Gleason score were associated with PFS, and the number of lymph node metastases was associated with both PFS and OS. Patients who underwent radiotherapy showed better PFS and OS. High-risk features (at least 2 criteria among ≥75% biopsy positive core rate, Gleason score ≥9, and ≥2 positive lymph nodes) were especially associated with improved outcomes after undergoing radiotherapy.ConclusionWe identified prognostic factors for clinically regional lymph node-positive prostate cancer and showed the benefits of local radiation therapy. Patients with high-risk features may be especially suitable candidates for radiotherapy.