Watch and wait, worth It?

Background: The surgery with total mesorectal excision recommended by R. J. Heald in 1982 is the gold standard. Rectal cancer (RC) surgery has a morbidity rate ranging from 6 to 35%, and it can cause functional issues such as sexual, urinary, and bowel dysfunction in the long term. Neoadjuvant chemoradiotherapy (CRT) has been gaining ground in patients with lesions in the middle and lower rectum. The aim of the present study is to present the experience of a reference service in the treatment of RC. Patients and Methods: A retrospective study involving 53 patients diagnosed with RC between January 2017 and December 2019 with follow-up until December 2020. We examined tumor location, disease stage, digital rectal exam findings, carcinoembryonic antigen (CEA), therapeutic modality offered, and follow-up time. Results: A total of 32% of the patients were men and 68% were women, with a mean age of 60 years old. Location: upper rectum in 6 cases, middle rectum in 21 cases, and lower rectum in 26 cases with evolution from 9.8 to 13.5 months. The most frequent complaints were hematochezia and constipation. A total of 36 patients underwent neoadjuvant therapy: 11 complete clinical response (CCR) (30.5%), 20 (55.5%) partial clinical response (PCR), and no response in 5 patients (14%). The follow-up ranged from 12 to 48 months, with a mean of 30.5 months. A total of 25% of the patients had RC that went beyond the mesorectal fascia, and 22.64% had metastases in other parts of the body when they were diagnosed. Conclusion: Neoadjuvant radio and chemotherapy present themselves as an alternative in the treatment of rectal cancer. In 36 patients, 30.5% had a complete clinical response, 55.5% had a partial clinical response, and 14% had no response. It was worth doing the "Watch and Wait" (W&W) to sample. A definitive colostomy was avoided. However, it is necessary to expand the study to a larger follow-up and more patients. Additionally, it is necessary to implement a multicenter study. (AU)

Absceso hepático por Enterobius vermicularis como diagnóstico diferencial de metástasis hepática en cáncer colorrectal, reporte de caso / Liver Abscess Caused by Enterobius vermicularis as a Differential Diagnosis for Liver Metastasis in Colorectal Cancer, Case Report

Resumen Introducción: el cáncer colorrectal es la cuarta causa de mortalidad asociada con cáncer en el mundo. La identificación de las metástasis de este tumor en el momento prequirúrgico es cada vez más frecuente por los estudios imagenológicos con los que se cuenta en la actualidad. Presentamos el caso de una paciente con infección por Enterobius vermicularis que simula la presencia de metástasis hepáticas. Presentación del caso: se presenta el caso de una paciente femenina proveniente del área rural, con dolor abdominal de 1 año de evolución asociado con hemorragia de vías digestivas bajas y pérdida de peso. Las imágenes y estudios endoscópicos muestran una lesión tumoral en el colon sigmoide con biopsias que reportan adenocarcinoma de colon sigmoides, además de lesiones hepáticas sugestivas de malignidad. Se llevó a resección anterior de recto y sigmoides con anastomosis alta y toma de biopsias hepáticas, que descartaron la malignidad e informaron la presencia de infección hepática por E. vermicularis. Discusión: La infección por E. vermicularis a nivel hepático presentada en el caso es poco frecuente, dicha infección puede simular la presencia de metástasis hepáticas, por lo cual debe tenerse en cuenta como diagnóstico diferencial de enfermedad metastásica de cáncer colorrectal.

Abstract Introduction: colorectal cancer is the fourth leading cause of cancer-related mortality worldwide. The identification of the metastases of this tumor in the preoperative stage is increasingly frequent due to the imaging studies currently available. We present the case of a patient with an infection caused by Enterobius vermicularis that simulates the presence of liver metastases. Case presentation: a female patient from a rural area showing a one-year abdominal pain evolution associated with lower gastrointestinal tract bleeding and weight loss. Endoscopic imaging and studies displayed a tumor lesion in the sigmoid colon, with biopsies reporting sigmoid colon adenocarcinoma and liver lesions suggesting malignancy. Anterior resection of the rectum and sigmoid was performed with high anastomosis and liver biopsies, which ruled out malignancy and reported the presence of liver infection by E. vermicularis. Discussion: in this case, the hepatic E. vermicularis infection was rare. This infection can simulate the presence of liver metastases; therefore, it should be considered a differential diagnosis of metastatic colorectal cancer.

Early results of novel robotic surgery-assisted low anterior resection for rectal cancer and transvaginal specimen extraction by using Da Vinci XI: initial clinical experience

SUMMARY OBJECTIVE: The aim of this study is to evaluate the early results of robotic surgery-assisted low anterior resection for rectal cancer and transvaginal specimen extraction, regarding the operative time, operative and early postoperative complications, hospital stay, and pathological reports in a series of 10 patients. METHODS: From November 2016 to October 2019, case series study on patients diagnosed with RC was included in this study. All robotic-assisted low anterior resection of the rectum, vaginal removal of the specimen, colorectal anastomosis, and loop ileostomies were performed using the Da Vinci XI system. RESULTS: The mean age of patient was 64.8 (58-72) years. Low anterior resection was performed to seven patients, and very low anterior resection was performed to three patients. Total mesorectal excision of the rectum, transvaginal specimen extraction, transanal anastomoses, and protective ileostomy were performed in all 10 patients. The mean operative time was 275±30.50 min, and estimated blood loss was 50±10.50 mL. No patient required conversion to conventional surgery. Negative circumferential resection, proximal, and distal margins were accomplished negative. Mean number of lymph nodes harvested was 20±5.5. According to the pathological reports, all were adenocarcinoma. T1 stage was 80.0%, and T2 stage was 20.0%. Lymph node metastasis accounted for 80.0%. CONCLUSIONS: To our literature search, this is the first study reporting the early outcomes of the novel robotic surgery-assisted low anterior resection for rectal cancer and transvaginal specimen extraction by using the Da Vinci Xi system. It can be performed safely and successfully in selected patients by providing an excellent cosmetic body image, which may be important for women.

Radioterapia intraoperatória com elétrons no tratamento do câncer colorretal localmente avançado submetido a ressecção incompleta: análise econômica sob a perspectiva do Sistema de Saúde Suplementar brasileiro / Intraoperative electron-beam radiotherapy in locally advanced rectal cancer, in patients submitted to suboptimal surgery: economic analysis on the Brazilian Private Health Care system perspective

Objetivo: Este estudo objetivou avaliar o custo-efetividade da aplicação da radioterapia intraoperatória com elétrons (RIOe) no paciente com câncer retal localmente avançado (CRLA) submetido a radio/quimioterapia neoadjuvante seguida de ressecção incompleta (margem comprometida ou doença grosseira residual). Métodos: Para tanto, foi elaborado um modelo de Markov. Os dados de eficácia, efeitos secundários, controle local e sobrevida global foram extraídos da literatura. A perspectiva considerada foi a do sistema de saúde privado brasileiro. Considerou-se, para o custo e para a efetividade, uma taxa de desconto anual de 5%. Resultados: A estratégia que continha a RIOe mostrou-se, nesse cenário, dominante em comparação à estratégia que não envolvia essa abordagem. Os resultados mostraram-se robustos após análises de sensibilidade uni e multivariadas. Conclusão: Concluiu-se que pode ser vantajosa, tanto para os pacientes com CRLA quanto para as operadoras de saúde do mercado privado brasileiro, a aplicação de RIOe na ocorrência de cirurgia subótima, ainda que se sugira que esses dados devem ser confirmados posteriormente, por meio da coleta de dados de mundo real, devido à ausência de níveis robustos de evidência, na literatura, para esse cenário clínico específico.

Objective: This study aimed to evaluate the cost-effectiveness of intraoperative electron radiotherapy (IOeRT) in patients with locally advanced rectal cancer (LARC) undergoing neoadjuvant radio-chemotherapy, followed by incomplete resection (compromised margin or gross residual disease). Methods: A Markov model was constructed. Data on efficacy, side effects, local control and overall survival were extracted from the literature. The perspective was that of the Brazilian private health system. For the cost and effectiveness, an annual discount rate of 5% was considered. Results: The strategy that contained IOeRT was, in this scenario, dominant, in comparison to standard of care. Results were considered robust, after univariate and multivariate sensitivity analyzes. Conclusions: We concluded that it can be advantageous, both for patients with LARC submitted to suboptimal surgery, as well as for Brazilian health insurance companies, the application of IOeRT. Although it is suggested that these results should be confirmed later, through the collection of real-world data, due to the absence of randomized controlled trials, in this specific clinical scenario.

Resección anterior del recto ultrabaja laparoscópica con anastomosis coloanal en cáncer del recto bajo / Laparoscopic Ultralow Anterior Rectal Resection with Coloanal Anastomosis in Low Rectum Cancer

RESUMEN Introducción: La resección anterior del recto ultrabaja laparoscópica con anastomosis coloanal evita la realización una colostomía definitiva. Objetivo: Determinar las indicaciones, describir la técnica quirúrgica y mostrar los resultados a largo plazo obtenidos en la realización de este proceder en el tratamiento del cáncer del recto bajo. Método: Se realizó un estudio observacional descriptivo y prospectivo de 53 pacientes con cáncer del recto bajo en el período comprendido entre octubre 2007 y noviembre 2018 en el Centro Nacional de Cirugía de Mínimo Acceso. Todas las resecciones fueron llevadas a cabo por un grupo dedicado a la cirugía colorrectal, en todos los casos se realizó la excisión total del mesorrecto. Resultados: Se operaron mediante esta técnica 53 pacientes, 30 masculinos y 23 femeninos con un promedio de edad de 57 años (rango 23-81) y de ellos 42 (79,2 por ciento) después de terapia neoadyuvante. El promedio de tiempo quirúrgico fue de 195 min (rango 90-360) y las pérdidas hemáticas estimadas, de 72 mL. La incidencia de morbilidad mayor fue de 16,9 por ciento (9/53) y la media de estadía hospitalaria de 6,3 días. La media del periodo de seguimiento fue de 40 meses (rango 1-132) con una recidiva local de 9,4 por ciento (5/53) y una supervivencia global a los 5 años de 80,3 por ciento. Conclusiones: La resección anterior del recto ultrabaja laparoscópica con anastomosis coloanal es una técnica segura con excelentes resultados en cuanto a recidiva local y supervivencia global(AU)

ABSTRACT Introduction: Laparoscopic ultralow anterior rectal resection with coloanal anastomosis prevents the performance of a definitive colostomy. Objective: To determine the indications, describe the surgical technique and show the long-term outcome of performing this procedure in the treatment of cancer of the lower rectum. Method: A descriptive and prospective observational study of 53 patients with low rectal cancer was carried out in the period between October 2007 and November 2018, at the National Center for Minimum Access Surgery. All resections were carried out by a group dedicated to colorectal surgery. In all cases, the total mesorectal excision was performed. Results: 53 patients (30 males and 23 females), with an average age of 57 years (range 23-81) and 42 (79.2 percent) after neoadjuvant therapy were operated using this technique. The average surgical time was 195 min (range 90-360) and the estimated blood loss was 72 mL. The incidence of major morbidity was 16.9 percent (9/53) and the average hospital stay was 6.3 days. The mean follow-up period was 40 months (range 1-132), with a local relapse of 9.4 percent (5/53) and a 5-year overall survival of 80.3 percent. Conclusions: Laparoscopic ultralow anterior resection of the rectum with coloanal anastomosis is a safe technique with excellent outcomes in terms of local relapse and overall survival(AU)

Short-term efficacy of combination of 125I seed brachytherapy and cetuximab in postoperation recurrent rectum cancer / 中华消化杂志

Objective To evaluate the short-term efficacy of combination of 125 I seed brachytherapy and cetuximab in postoperation recurrent rectum cancer.Methods From July 2014 to June 2018,at Affiliated Hospital of Shandong Academy of Medical Sciences,57 patients with postoperation recurrent rectal cancer were recruited.According to therapy the patients were divided into two groups:the radiotherapy group (30 cases) treated with radioactive 125I seeds alone and the combination treatment group (27 cases) treated with combination of radioactive 125I seeds and cetuximab.The tumor size,pain relief and adverse reactions were observed in both groups.Chi-square test were performed for statistical analysis.Results After treatment for six months,the total efficacy rate and local control rate of combination treatment group were 54.2％ (13/24) and 87.5％ (21/24),respectively;and which were higher than those of radiotherapy group (17.9％,5/28 and 39.3％,11/28),and the differences were statistically significant (x2 =15.01 and 2.55,both P ＜ 0.05).At one month after treatment,the pain relief rate of radiotherapy group and combination treatment group was 70.0％ (21/30) and 85.2％ (23/27),respectively,and there was no statistically significant difference between the two groups (P ＞ 0.05).After treatment for six months,the rates of adverse reactions of radiotherapy group and combination treatment group were 46.7 ％ (14/30) and 63.0％ (17/27),respectively,there was no statistically significant difference between the two groups (P ＞ 0.05).The symptoms of patients with radiation injury significantly improved after symptomatic treatment.Conclusion The short-term efficacy of combination of 125 I seed brachytherapy and cetuximab is better than that of 125 I seed brachytherapy alone in patients with postoperation recurrent rectum cancer.

Comparación Clínica de radioterapia de intensidad modulada vs. radioterapia 3D en tratamiento neoadyuvante del cáncer de recto localmente avanzado / Clinical comparison of intensity modulated radiotherapy vs. 3D radiotherapy in neoadjuvant treatment of locally advanced rectal cancer

El objetivo de este trabajo fue comparar ventajas potenciales de la radioterapia de intensidad modulada (IMRT) vs. la radioterapia 3D (3DRT) en el control loco-regional y la toxicidad aguda en pacientes con cáncer de recto localmente avanzado (CRLA). Se analizaron retrospectivamente 235 pacientes con adenocarcinoma de recto T2/T4 y N0/N1 sometidos a radioquimioterapia neoadyuvante entre febrero de 2010 y agosto de 2015. La modalidad radiante se correlacionó con los resultados clínicos (control local y a distancia) y las tasas de toxicidades agudas urinarias, hematológicas, gastrointestinales (GI) y dérmicas. Ciento cuarenta (59.6%) recibieron IMRT y 95 (40.4%) 3DRT. La mediana de seguimiento fue de 36 meses. Las tasas de recidiva local y metástasis a distancia fueron similares entre IMRT y 3DRT. No se encontraron diferencias estadísticamente significativas en control local (CL) ni en supervivencia global (SG) entre IMRT y 3DRT (p=0.56 y p=0.24, respectivamente), ni en colostomía libre para tumores rectales bajos (p=0.44). IMRT implicó menor toxicidad cutánea (p<0.001), hematológica (p<0.0001), urinaria (p=0.0017), y gastrointestinal (p=0.0006). La incidencia de diarrea grado ≥ 3 fue del 16% entre los pacientes del grupo 3DRT frente al 5% de del grupo IMRT. En el análisis univariado, el estadio clínico T, edad, KPS, y quimioterapia adyuvante se asociaron con mejor SG (todos p<0.05) y la dosis total de radiación se asoció con mejor período libre de enfermedad (p=0.0065) Postulamos que IMRT permitiría un aumento de dosis en forma segura con el potencial de aumentar la tasa de respuestas patológicas completas (RPC), en particular en tumores rectales bajos (AU)

The aim was to compare the advantages of IMRT vs. 3D in loco regional control and acute toxicity in patients with locally advanced rectum cancer. We analyzed retrospectively 235 patients with rectal adenocarcinoma T2/T4 and N0/N1 undergoing chemo radiation between February 2010 and August 2015. The radiant modality was correlated with clinical outcomes (local and systemic control) and rates of acute urinary, hematological, gastrointestinal and dermal toxicities. One hundred and forty patients (59.6%) received IMRT and 95 (40.4%) received 3D. The median follow-up time was 36 months. The rates of local recurrence and distant metastases were similar between IMRT vs. 3D. No statistically significant differences were found in local control or survival between IMRT and 3D (p=0.56 and p =0.24, respectively), nor in free colostomy for low rectal tumors (p= 0.44). IMRT resulted in lower dermal (p<0.001), hematological (p<0.0001), urinary (p=0.0017), and gastrointestinal toxicity (p=0.0006). The incidence of diarrhea grade ≥ 3 was 16% among 3D patients vs. 5% in IMRT. In the univariate analysis, clinical stage T, age, KPS, and adjuvant chemotherapy were associated with better overall survival (all p<0.05) and the total dose of radiation was associated with better disease-free period (p=0.0065). We postulate that IMRT would allow us to increase dose in a safe manner with the potential to increase rate of complete pathological responses, particularly in low rectal tumors (AU)

Prediction of Charlson weighted index of comorbidities on evaluating common diseases on ＞ 60 years old patients with rectum cancer / 中国综合临床

Objective To investigate the effect of common diseases by the Charlson weighted index of comorbidities(WIC) in predicting 1-year survival rate of older patients with rectum cancer.Methods Retrospective analyzed 160 patients with rectum cancer who were admitted in general surgery of Beijing Chaoyang Hospital Affiliated to Capital Medical University from Jun.2011 to May 2012.The patients were divided into two groups according to 1-year survival status:survival group (n =123) and death group (n =37).The data were recorded including age,gender,cancer diagnosis,underlying diseases,operation mode (laparoscopic or open) The WIC and the Acute physiology and chronic health Ⅱ (APACHE Ⅱ) score were calculated.Logistic regression analysis was used to determine the independent predictors for 1-year survival rate.Receiver operating characteristics(ROC) curve was used to evaluate the value of WIC in predicting 1-year survival rate.Results Of the 160 patients,123 cases survived,37 cases died at 1 year after treatment.WIC score and APACHE score in death group were (2.2 ± 1.3) and (11.5 ± 5.1),higher than those of survival group (1.3 ± 1.2,9.5 ± 4.3 ;P =0.021,0.014).Multivariate Logistic regression analysis indicated that age,mode of operation,WIC score and APACHE score were related to the 1-year survival status of patients with rectal cancer(OR(95％ CI):1.053 (1.018-1.178,1.021 (1.011-1.906),1.786 (1.203-2.235),1.019 (1.004-1.628).ROC curve area of forecasting of death of the WIC score,APACHE Ⅱ score and the combination of the two are 0.731,0.828,0.959.Conclusion The WIC scoring system can be a good evaluation method for 1-year survival rate in old patients with rectum cancer.

Dosimetric comparison of split field and fixed jaw techniques for target volumes in the rectum cancer / 中华放射医学与防护杂志

Objective To study the dosimetric comparison of split field and fixed jaw techniques for large IMRT target volumes in the rectum cancer.Methods CT images of fifteen patients with rectum malignancies and regional target volumes were transferred into Eclipse planning system.SFT plan and FJT plan were performed on an Eclipse TPS using beam data generated for linear accelerator.A standard beam arrangement consisting of seven coplanar fields was used in both techniques.Institutional dose-volume constraints used in rectum cancer were kept the same for both techniques.Target and organs at risk were evaluated.Results PTV95 in FJT plan coverage was lower (t =-2.24,P ＜ 0.05).Dmean in FJT plan was increased (t =2.54,P ＜ 0.05),but Dmax was not different.HI in FJT plan became inferior (t =3.09,P ＜0.05),while CI was not different.There was no difference in dose distribution among bladder,femoral head and cauda equina.The value of V5 of small intestine increased in FJT plan (t =4.76,P ＜0.05),and the values of V20 and V50 of bone marrow were better than those in SFT plan (t =-2.66,-3.36,P＜0.05),while Dmax was higher than that in SFT plan (t =3.30,P ＜ 0.05).The value of V20 of body was higher in FJT plan than that in SFT plan (t =2.48,P ＜0.05).The number of MU was significantly lower in FJT plan than that in SFT plan (t =-9.38,P ＜0.05).The average segments in FJT plan decreased by 39.4％ compared with SFT plan (t =-6.46,P ＜ 0.05).Verification rate in FJT plan group was better than that in SFT plan (t =10.46,P＜0.05),and the treatment time was shortened from 12 to 6 min.Conclusions Compared to SFT technique,patients with rectal cancer who were treated with FJT could get better dose of target and organs,which can meet the clinical treatment requirements.The technique could shorten the treatment time and reduce the treatment MU.It also could increase the number of patients to be treated,reduce their waiting time and reduce the difficulty of QA.

Cáncer gástrico temprano operado en el Hospital Rebagliati: estudio de 76 casos en el quinquenio 2004-2008 / Early gastric cancer surgically treated at Rebagliati Hospital: study of 76 cases during 5 years

El presente reporte describe las características del cáncer gástrico temprano sometido a tratamiento quirúrgico en el Servicio de Cirugía de Estómago del Hospital Nacional Rebagliati en el quinquenio comprendido entre enero del 2004 y diciembre del 2008. La edad promedio fue de 68 años; predomina el sexo masculino, la localización distal, la infiltración a submucosa y el tipo histológico intestinal. La metástasis ganglionar se presenta en el 13%.

This report describes the characteristics of early gastric cancer surgically treated in the Gastric Cancer Unit at Rebagliati National Hospital between January 2004 and December 2008. Mean age was 68 years; males, distal location, submucosa infiltration and intestinal histological type predominate in these patients. Lymph node involvement was 13%.

Comparación de la percepción de la calidad de vida en pacientes con tratamiento quirúrgico y/o adyuvante en Cáncer de Aolon y Cáncer de Recto en el Instituto Regional de Enfermedades Neoplásicas (Trujillo) / Comparison of perception of quality of life in patients with surgical and/or adjuvant in colon cancer and rectal cancer in the Regional Institute of Neoplasic Diseases (Trujillo)

Objetivo. Determinar la efectividad del tratamiento quirúrgico y/o adyuvante en mejorar la calidad de vida en pacientes con cáncer de colon en comparación al de cáncer rectal. Material y Métodos. Estudio de cohortes ambispectivo que evaluó 27 pacientes con diagnóstico de adenocarcinoma de colon (Grupo A=12) y de recto (Grupo B= 15) resecable atendidos en el Instituto Regional de Enfermedades Neoplásicas de Trujillo desde el 1 de enero 2008 hasta el 31 de julio del 2009. Resultados. La calidad vida global, valorada por el cuestionario QLQ-C30 a los 3 meses del postoperatorio fue de 67.86 más menos 17.90 puntos vs. 68.50 más menos 11.94 puntos respectivamente para los pacientes del grupos A y B (p = 0.934). La función social fue mejor en pacientes sometidos a cirugía en el Grupo A que en el grupo B (37.50 +/- 13.36 puntos vs. 60.00 +/- 13.69 puntos; p = 0.018). La imagen corporal a los 3 meses valorada por el cuestionario QLQ-CR-29 tuvo una puntuación media de 28.12 +/- 6.12 puntos y 50.00 +/- 25.00 puntos para los pacientes del Grupo A y B respectivamente (p = 0.034). Los pacientes del Grupo A presentaron una puntuación promedio a los 6 meses para la función sexual de 33.33 +/- 12.91 puntos, mientras que los pacientes del Grupo B su puntuación promedio fue 65.00 +/- 22.36 puntos (p = 0.016). Conclusiones. Ambas cirugías para cáncer de colon y recto tienen la misma efectividad en mejorar la calidad de vida global de dichos pacientes, sin embargo la función social, imagen corporal, y función sexual es mejor en cirugía de colon.

Objective. Determine the effectiveness of surgical treatment and/or adjuvant to improve the quality of life in patients with colon cancer compared to rectal cancer. Material and Methods. Cohort study that evaluated 27 patients diagnosed with colon adenocarcinoma (Group A= 12) and rectum (Group B= 15) resectable treated at the Institute Regional of Neoplastic Diseases of Trujillo since the 1 January 2008 until 31 July 2009. Results. The overall life quality, as assessed by the QLQ-C 30 at 3 months postoperatively was 67.86 +/- 17.90 points vs. 68.50 +/- 11.94 points respectively for the patients of groups A and B (p= 0.934). The social function was better in patients undergoing surgery for Group A than Group B , (37.50 + 13.36 points vs. 60.00 + 13.69 points, p = 0.018). Body image at 3 months assessed by the QLQ-CR-29 had an average score of 28.12 +/- 6.12 points and 50.00 +/- 25.00 points for Group A y B respectively (p = 0.034). The Group A patients had a mean score at 6 months for sexual function of 33.33 +/- 12.91 points, while Group B patients this average score was 65.00 +/- 22.36 points (p = 0.016). Conclusions . Both surgeries for colon and rectal cancer are as effective in improving the overall quality of life of these patients, however the social function, body image, and sexual function is better in colon surgery.

Inhibition by Berberine and Cytosine Deaminase Enzyme Suicide Gene on Rectum Cancer Cells / 医学研究杂志

Objective To investigate the killing effect by berberine and cytosine deaminase enzyme suicide gene on rectum cancer cells in vitro.Methods Human rectum cancer HR-8348 cells were cultured,then transfected by recombinant adenovirus suicide gene the survivial percentage of which was examined by MTT method.Results Recon of pcDNA3.1(+)-CD was constructed successfully.The CD gene sequence analysis indicated th a+ recon pcDNA3.1(+)-CD contain intact gene.RT-PCR showed CD gene expressed stably in the HR-8348 cells,which is sensitive to 5-FC above the density of 100?g/ml.Elevated along with the medicine density with response time lengthening,its damaging effect enhanced.However for the density above 5-FC 250g/ml,the change of cell killing rate was not apparent.when by 0.1,0.3,3.0,30.0?m density berberine unites the 5-FC on rectum cancer of the intestines Respectively,the cell inhibitory action elevates along with density rises,but 3.0?m,30?m the inhibition change was not apparent.Under 250?g/ml of 5-FC,0.1,0.3,3.0,30.0?m of berberine united the 5-FC The HR-8348 cells growth suppression rate were:27.7%,42.4%,52.3%,56.3% respectively.Conclusion Inhibition function to human rectum cancer HR-8348 cells can be strengthened by berberine combined 5-FC.

Clinical application of curve-type stapler in lower rectal cancer reserving anus / 临床外科杂志

Objective To evaluate the effect of Curve-t ype Stapler applied in lower rectal cancer reserving anus. Method The experiences were summarized and analyzed in 31 patients underwent re serving anus from January 2000 to April 2001.In 31 patients were performed end- to-side anastomosis for lower rectum cancer through abdomen.Result There were no complications including hemorrhage, stenosis and postope rative fistula in 31 cases lower rectum cancer end-to-side anastomosis.Conclutions The way of anastomosis is an effective, reliable, co nvenient method which lasts a short time.

The effects of TPN on postoperative patients with colon or rectum cancer (clinical analysis of 42 cases) / 肠外与肠内营养

s: Objectives:To study effects of TPN on postoperative patients with colon or rectum cancer,including gut function recovery,wound healing and immune function. Medthods:42 elder patients with colon or rectum cancer were divided into two groups at randomization,TPN group and control group.From POD+1 to POD+8,TPN group was given TNA daily and control group was given solutions of glucose and electrolyte.Gut function recovery and wound healing were observed and albumin,pre albumin,IgG,IgA,IgM,CD3 +,CD4 + and CD8 + were determined on POD+1 and POD+8. Results:The recovery of gut function and wound healing in TPN group were better than those in control group,and levels of pre albumin,IgG,IgA were higher than those in control group. Conclusions:TPN has positive effects in gut function recovery,wound healing and immune function in postoperative patients with colon or rectum cancer.

MORPHOLOGICAL OBSERVATIONS ON TUMOR INFILTRATINGDENDRITIC CELLS OF HUMAN RECTUM CANCER / 解剖学报

Objective To study on the morphological characterizations of tumor infiltrating dendritic cells(TIDCs) in human rectum cancer. Methods The distributive and morphological changes of TIDCs were observed by light,electron microscopy and examined with immunohisochemistoy. Results TIDCs mainly appeared in the tumor-surrounding tissues.There were more TIDCs in the earlier stage than in the later stage(P