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BACKGROUND: The success of abdominal cancer surgery depends not only on the surgery itself but is influenced by the overall perioperative management. Given the multitude of perioperative measures and the ever-increasing number of studies on perioperative management, it is difficult to keep track and provide evidence-based perioperative management. The planned guideline on perioperative management will review the existing evidence and derive treatment recommendations. METHODS: The processing of the evidence is carried out by 6 working groups according to an 8-step scheme: after drafting the guideline questions in PICO format (1), a systematic literature search is carried out (2), and the records found are screened by two independent reviewers from the coordination team. Subsequently, the full texts of the potentially relevant articles are made available to the working groups for full text screening (3). All articles to be included are reviewed for methodological quality (4) before summary of findings tables are generated (5). In line with the GRADE approach, confidence in the evidence is assessed (6) before a recommendation is derived from the evidence, using a modified GRADE Evidence to Decision Framework (7). Finally, all recommendations are compiled and agreed within the guideline group (8). DISCUSSION: Guidelines serve as foundation for therapy decisions in everyday clinical practice and should therefore be based on up-to-date research results. However, while primary studies and systematic reviews are critically reviewed for their methodological quality, the process of guideline development is often not comprehensible. A protocol with predefined methodology should therefore create transparency and strengthen confidence in the recommendations. TRIAL REGISTRATION: The guideline is registered in the AWMF (Association of the Scientific Medical Societies) Guideline Register (088-010OL).
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AIM: The goal of this European Society of Coloproctology (ESCP) guideline project is to give an overview of the existing evidence on the management of diverticular disease, primarily as a guidance to surgeons. METHODS: The guideline was developed during several working phases including three voting rounds and one consensus meeting. The two project leads (JKS and EA) appointed by the ESCP guideline committee together with one member of the guideline committee (WB) agreed on the methodology, decided on six themes for working groups (WGs) and drafted a list of research questions. Senior WG members, mostly colorectal surgeons within the ESCP, were invited based on publication records and geographical aspects. Other specialties were included in the WGs where relevant. In addition, one trainee or PhD fellow was invited in each WG. All six WGs revised the research questions if necessary, did a literature search, created evidence tables where feasible, and drafted supporting text to each research question and statement. The text and statement proposals from each WG were arranged as one document by the first and last authors before online voting by all authors in two rounds. For the second voting ESCP national representatives were also invited. More than 90% agreement was considered a consensus. The final phrasing of the statements with < 90% agreement was discussed in a consensus meeting at the ESCP annual meeting in Vienna in September 2019. Thereafter, the first and the last author drafted the final text of the guideline and circulated it for final approval and for a third and final online voting of rephrased statements. RESULTS: This guideline contains 38 evidence based consensus statements on the management of diverticular disease. CONCLUSION: This international, multidisciplinary guideline provides an up to date summary of the current knowledge of the management of diverticular disease as a guidance for clinicians and patients.
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Doenças Diverticulares , Colo , Consenso , Doenças Diverticulares/terapia , HumanosRESUMO
BACKGROUND: For more than a decade the evolving concept of fast track surgery has been implemented, predominantly in colorectal surgery. The practice of fast track surgery has yielded excellent results concerning reduction of postoperative complications and hospital stay and has been shown to increase patient satisfaction; however, several studies have shown a sometimes alarmingly low rate of implementation of the individual fast track measures and the rate is a maximum of 44%. OBJECTIVE: In this review, obstacles for implementation of fast track surgery are investigated. Advice is given on possible solutions to circumvent obstacles and facilitate successful establishment of multimodal recovery protocols in individual institutions. MATERIAL AND METHODS: The current international literature is critically evaluated and discussed with a particular focus on prospective clinical trials and expert recommendations. RESULTS: The reasons for a lack of adherence to fast track surgery principles have been shown to be multifactorial. Time-consuming expenditure, logistic difficulties, lack of support by colleagues as well as limitations in the healthcare system and patient-dependent factors appear to complicate implementation of fast track programs. CONCLUSION: Successful implementation and long-term perpetuation can be achieved only by an interdisciplinary team with a low level hierarchy, continuous training and a positive feedback culture. An early inclusion and clarification of personnel and patients should be firmly integrated into the fast track concept. This results in a higher satisfaction of patients and personnel and subsequently stronger adherence to the fast track concept.
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Cirurgia Colorretal , Procedimentos Cirúrgicos do Sistema Digestório , Tempo de Internação , Humanos , Complicações Pós-Operatórias , Estudos ProspectivosRESUMO
INTRODUCTION: Total mesorectal excision (TME) is the international standard for rectal cancer surgery. In addition to laparoscopic TME (lapTME), transanal TME (taTME) was developed in recent years to reduce the rate of incomplete TME, conversion to open surgery and postoperative functional impairment. Despite limited evidence, this technique is becoming increasingly more popular and is already routinely used by many hospitals for rectal cancer in varying tumor level locations. The aim of this review was to evaluate the taTME compared to anterior rectal resection with lapTME as the standard of care in rectal cancer surgery based on currently available evidence. METHOD: The databases PubMed and Medline were systematically searched for publications on transanal total mesorectal excision (taTME) and transanal minimally invasive surgery (TAMIS). Relevant studies were selected and further research based on the reference lists was undertaken. RESULTS: A total of 16 studies analyzing 3782 patients were identified. The taTME does not lead to a higher rate of complete TME-resected specimens compared to the standard procedure. So far, superiority could not be demonstrated for complication rates or for functional or oncological results. Serious complications secondary to dissection in incorrect planes were observed. The anastomotic level generally seems to be closer to the sphincter after taTME versus anterior lapTME. CONCLUSION: Considering current evidence, taTME failed to show superiority compared to conventional anterior lapTME. Although taTME has some potential advantages, it carries substantial risks. If performed outside of clinical trials, it should therefore only be used in carefully selected patients with a high possibility of conversion, following adequate patient informed consent and after intense and systematic training of the surgeon.
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Laparoscopia , Neoplasias Retais , Cirurgia Endoscópica Transanal , Humanos , Complicações Pós-Operatórias , Neoplasias Retais/cirurgia , RetoRESUMO
BACKGROUND: The morbidity after colorectal resection is still high. Perioperative i.v. antibiotic administration has become established as the standard to decrease the wound infection rate. An ongoing discussion is the status of preoperative mechanical bowel preparation. There seems to be evidence that mechanical bowel preparation in combination with administration of oral non-resorbable antibiotics significantly decreases the rate of anastomotic leakage and postoperative wound infections. OBJECTIVE: In order to obtain an overview on the state of preoperative preparation before elective colorectal surgery in Germany, a survey was initiated among the members of the German Society of General and Visceral Surgery. MATERIAL AND METHODS: In March 2017 the 5200 members of the German Society of General and Visceral Surgery (DGAV) received via email a link to an online survey on bowel preparation before elective colorectal surgery. RESULTS: A total of 557 colleagues answered the questionnaire online. Mechanical bowel preparation with orthograde lavage was the predominant method for bowel preparation prior to colon resection in over 50%. In rectal surgery with primary anastomosis and planned protective stoma, mechanical bowel preparation with orthograde lavage dominated with 76.5%. An oral antibiotic administration alone and in combination with mechanical bowel preparation for colon resection was used by less than 10% and 2%, respectively and ca. 11â¯% for rectal surgery both with and without mechanical bowel preparation. CONCLUSION: In contrast to the evidence in the current literature to carry out preoperative mechanical preparation of the bowel in combination with an oral antibiotic administration prior to colorectal resection, in practice these recommendations have not become established among the participants of this survey.
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Cirurgia Colorretal , Procedimentos Cirúrgicos Eletivos , Infecção da Ferida Cirúrgica , Alemanha , Humanos , Cuidados Pré-Operatórios , Infecção da Ferida Cirúrgica/prevenção & controle , Inquéritos e QuestionáriosRESUMO
BACKGROUND: Recurrent disease at the anastomotic site after bowel resection represents a major problem in patients with Crohn's disease. In 2011, a new anastomotic technique (Kono-S anastomosis) was published, which as a functional end-to-end anastomosis creating a wide anastomotic diameter aimed to reduce the rate of recurrence after surgery. AIM: To evaluate the Kono-S anastomosis with respect to early and late postoperative complications and recurrence rate after surgical intestinal resection in patients with Crohn's disease at a university center. PATIENTS AND METHODS: All patients with Crohn's disease who underwent Kono-S anastomoses between June 2015 and December 2016â¯at the Department of Surgery, University Medical Centre Mannheim, were included in the study. After obtaining informed consent, patient data regarding surgery and hospital stay were recorded in a prospective database. Follow-up was carried out by structured telephone interviews including disease progression, medication and surveillance. Statistical analysis was performed using the Graph Pad Prism 7 software. Ethics board approval was obtained from the Medical Ethics Commission II of the Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany (No. 2017-575N-MA). RESULTS: A total of 53 patients (32 female and 21 male) were included in this study. The median procedural time was 157â¯min. The median follow-up was 12 months (range 4-23 months). Of the patients 3 developed early postoperative complications with a Clavien-Dindo scoreâ¯≥ III and 25 patients with or without symptoms were controlled by endoscopy and/or magnetic resonance imaging (MRI) and no anastomotic recurrence was detected. No endoscopic interventions were necessary and 16 patients were symptom-free with no further specific therapy or controls. DISCUSSION: The Kono-S anastomosis is a safe anastomotic method with low morbidity. In the early follow-up recurrence rates of Crohn's disease at the anastomotic site were low. In the literature a reoperation rate of 5â¯% per year is given for patients with Crohn's disease after intestinal resection, so that in the long-term observation a valid statement on recurrence rate is possible. A potential advantage of the morphological end-to-end configuration of the Kono-S anastomosis is the better endoscopic dilatation compared to a side-to-side anastomosis. CONCLUSION: The Kono-S anastomotic technique has a low morbidity. In the early follow-up observational period no recurrence occurred in the anastomosis area in this series. Long-term data must clarify whether this technique is advantageous with respect to this aspect in the long run.
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Anastomose Cirúrgica , Doença de Crohn , Anastomose Cirúrgica/métodos , Colo , Doença de Crohn/cirurgia , Feminino , Alemanha , Humanos , Íleo , Masculino , Estudos Prospectivos , Recidiva , Estudos RetrospectivosRESUMO
BACKGROUND AND OBJECTIVES: The International Study Group of Liver Surgery established the first internationally standardized definitions and grading for posthepatectomy hemorrhage, posthepatectomy liver failure, and bile leakage. We aimed to correlate these definitions and grades of complications with objective parameters of the postoperative course, namely, mortality and length of stay, to assess the usefulness in clinical routine. METHODS: A total of 415 patients underwent hepatic surgery between 2004 and 2014. Uni- and multivariate analyses were made for correlations of posthepatectomy hemorrhage, posthepatectomy liver failure, and bile leakage with perioperative parameters and mortality. RESULTS: Of the total, 25 (6.1%) patients developed a posthepatectomy hemorrhage Grade A, 3 (0.7%) patients a posthepatectomy hemorrhage Grade B, and 1 (0.2%) patient a posthepatectomy hemorrhage Grade C; 23 (5.5%) patients had a posthepatectomy liver failure Grade A, 24 (5.8%) patients a posthepatectomy liver failure Grade B, and 7 patients (1.6%) a posthepatectomy liver failure Grade C. Bile leakage Grade A occurred in 10 (2.4%) patients, bile leakage Grade B in 24 (5.8%) patients, and bile leakage Grade C in 7 (1.6%) patients. Mortality was significantly increased in patients with posthepatectomy hemorrhage Grades B and C and in patients with posthepatectomy liver failure Grades A, B, and C. Three (42.9%) patients with bile leakage Grade C died. CONCLUSION: Our data indicate that the new definitions correlate well with mortality and duration of hospital stay.
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Bile , Hepatectomia/efeitos adversos , Falência Hepática/diagnóstico , Neoplasias Hepáticas/cirurgia , Hemorragia Pós-Operatória/diagnóstico , Adulto , Idoso , Índice de Massa Corporal , Feminino , Humanos , Tempo de Internação , Falência Hepática/etiologia , Falência Hepática/mortalidade , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Hemorragia Pós-Operatória/etiologia , Hemorragia Pós-Operatória/mortalidade , Estudos Retrospectivos , Fatores de Risco , Taxa de SobrevidaRESUMO
The airway epithelium regulates responses to aeroallergens, acting as a physical and immunological barrier. In asthma, epithelial barrier function and the expression of adherens junction protein E-cadherin is compromised, but it is unknown whether this is cause or consequence of the disease. We hypothesized that airway epithelial loss of E-cadherin is a critical step in the development of manifestations of asthma. We generated a transgenic mouse model with conditional loss of E-cadherin in lung epithelial cells at birth and onwards. We observed normal lung development at the time of birth in mice lacking E-cadherin in the lung epithelium. However, E-cadherin deficiency led to progressive epithelial damage in mice growing into adulthood, as evidenced by airway epithelial denudation, decreased zonula occludens (ZO)-1 expression, loss of ciliated cells, and enlarged alveolar spaces. In addition, spontaneous goblet cell metaplasia with mucus production was observed. These epithelial changes were accompanied by elevated levels of the epithelial-derived chemokine CCL17, infiltration of eosinophils and dendritic cells, and mucus production. In conclusion, loss of E-cadherin induces features in the lung reminiscent of those observed in asthma, indicating that the disruption of E-cadherin-mediated cell-cell contacts may play a key role in the development of asthma manifestations.
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Caderinas/metabolismo , Mucosa Respiratória/metabolismo , Mucosa Respiratória/patologia , Junções Aderentes/metabolismo , Animais , Asma/metabolismo , Caderinas/genética , Caderinas/fisiologia , Quimiocina CCL17/metabolismo , Células Dendríticas/imunologia , Modelos Animais de Doenças , Eosinófilos/metabolismo , Células Epiteliais/metabolismo , Epitélio/metabolismo , Células Caliciformes/metabolismo , Pulmão/patologia , Metaplasia/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Junções Íntimas/metabolismo , Proteína da Zônula de Oclusão-1/metabolismoRESUMO
The increasing number of refugees, migrants and international travelers influences the surgical spectrum of abdominal diseases. The aim of this review is to familiarize surgeons with specific diseases which are endemic in the patients' countries of origin and are likely to be diagnosed with increasing incidence in Germany. Low levels of hygiene in the countries of origin or refugee camps is associated with a high incidence of numerous infections, such as helminth infections, typhoid fever or amoebiasis, which if untreated can cause surgical emergencies. Historically, some of them were common in Germany but have been more or less eradicated because of the high socioeconomic standard. Echinococcosis and Chagas disease are frequently treated surgically while schistosomiasis can mimic intestinal cancer. Abdominal tuberculosis presents in a variety of abdominal pathologies and frequently causes diagnostic uncertainty. Sigmoid volvulus has a very low incidence among Europeans, but is one of the most common abdominal surgical conditions of adults in endemic countries. The number of patients who eventually undergo surgery for these conditions might be relatively low; however, surgeons must be aware of them and consider them as differential diagnoses in refugees and migrants with acute or chronic abdominal symptoms.
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Procedimentos Cirúrgicos do Sistema Digestório , Refugiados , Migrantes , Adulto , Alemanha , Humanos , InternacionalidadeRESUMO
BACKGROUND: Quality assessment in surgery is gaining in importance. Although sporadic recommendations for quality indicators (QI) in oncological colon surgery can be found in the literature, these are usually not systematically derived from a solid evidence base. Moreover, reference ranges for QI are unknown. OBJECTIVE: The aim of this initiative was the development of evidence-based QI for oncological colon resections by an expert panel invited by the German Society of General and Visceral Surgery (DGAV). Reference ranges from the literature and reference values from the Study, Documentation, and Quality Center (StuDoQ)|Colon Cancer Register were compared in order to deduce recommendations which are tailored to the German healthcare system. RESULTS: Based on the most recent scientific evidence and agreed by expert consensus, five QI for oncological colon surgery were defined and evaluated according to the QUALIFY tool. Mortality, MTL30 (mortality, transfer to another acute care hospital, or length of stay ≥30 days), anastomotic leakage requiring reintervention, surgical site infections necessitating reopening of the wound and ≥12 lymph nodes in the specimen qualified as QI owing to their relevance, scientific nature, and practicability. Based on the results of the systematic literature search and the statistical analysis of the StuDoQ|Colon Cancer Register, preliminary reference values are proposed for each QI. CONCLUSION: The presented set of QI seems appropriate for quality assessment of oncological colon surgery in the context of the German healthcare system. The validity of the QI and the reference values must be reviewed within the framework of their implementation. The StuDoQ|Colon Cancer Register provides a suitable infrastructure for collecting clinical data for quality assessment and risk adjustment.
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Neoplasias do Colo , Procedimentos Cirúrgicos do Sistema Digestório , Indicadores de Qualidade em Assistência à Saúde , Neoplasias do Colo/cirurgia , Confiabilidade dos Dados , Atenção à Saúde , Procedimentos Cirúrgicos do Sistema Digestório/normas , Medicina Baseada em Evidências , HumanosRESUMO
MDM2, an E3 ubiquitin ligase, is a potent inhibitor of the p53 tumor suppressor and is elevated in many human cancers that retain wild-type p53. MDM2 SNP309G is a functional polymorphism that results in elevated levels of MDM2 (due to enhanced SP1 binding to the MDM2 promoter) thus decreasing p53 activity. Mdm2SNP309G/G mice are more prone to spontaneous tumor formation than Mdm2SNP309T/T mice, providing direct evidence for the impact of this SNP in tumor development. We asked whether environmental factors impact SNP309G function and show that SNP309G cooperates with ionizing radiation to exacerbate tumor development. Surprisingly, ultraviolet B light or Benzo(a)pyrene exposure of skin shows that SNP309G allele actually protects against squamous cell carcinoma susceptibility. These contrasting differences led us to interrogate the mechanism by which Mdm2 SNP309 regulates tumor susceptibility in a tissue-specific manner. Although basal Mdm2 levels were significantly higher in most tissues in Mdm2SNP309G/G mice compared with Mdm2SNP309T/T mice, they were significantly lower in Mdm2SNP309G/G keratinocytes, the cell-type susceptible to squamous cell carcinoma. The assessment of potential transcriptional regulators in ENCODE ChIP-seq database identified transcriptional repressor E2F6 as a possible negative regulator of MDM2 expression. Our data show that E2F6 suppresses Mdm2 expression in cells harboring the SNP309G allele but not the SNP309T allele. Thus, Mdm2 SNP309G exhibits tissue-specific regulation and differentially impacts cancer risk.
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Carcinoma de Células Escamosas/genética , Fator de Transcrição E2F6/metabolismo , Predisposição Genética para Doença , Proteínas Proto-Oncogênicas c-mdm2/genética , Neoplasias Cutâneas/genética , Alelos , Animais , Carcinógenos/toxicidade , Carcinoma de Células Escamosas/etiologia , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Intervalo Livre de Doença , Fator de Transcrição E2F6/genética , Feminino , Queratinócitos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Neoplasias Experimentais/etiologia , Neoplasias Experimentais/genética , Fenótipo , Polimorfismo de Nucleotídeo Único , Cultura Primária de Células , Fatores Sexuais , Pele/citologia , Pele/efeitos dos fármacos , Pele/patologia , Pele/efeitos da radiação , Neoplasias Cutâneas/etiologia , Neoplasias Cutâneas/mortalidade , Neoplasias Cutâneas/patologia , Raios Ultravioleta/efeitos adversosRESUMO
From a sociopolitical aspect there is increasing interest in the quality of healthcare. In this context valid, reproducible, comparable and risk-adjustable markers that are easily identified have become crucial for consistent documentation of quality. We recommend MTL30 (mortality, transfer, length of stay) as one of these markers to consistently measure the quality of large visceral surgical interventions. The MTL30 subsumes a number of known markers that may help to predict postoperative complications. The MTL30 is considered to be fulfilled when a patient on the 30th day following surgery, a) has died b) is still in the hospital or c) has been transferred to another acute care hospital. The evaluation of the StuDoQ register of the German Society for General and Visceral Surgery (DGAV) shows that MTL30 occurs significantly more often than any of the individual parameters. The correlation between MTL30 and other patient-specific risk factors, e.g. American Society of Anesthesiologists classification (ASA), age, etc. enables a risk adjustment.
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Biomarcadores , Cirurgia Geral/normas , Garantia da Qualidade dos Cuidados de Saúde/normas , Sistema de Registros , Sociedades Médicas , Procedimentos Cirúrgicos Operatórios/normas , Vísceras/cirurgia , Alemanha , Mortalidade Hospitalar , Humanos , Tempo de Internação/estatística & dados numéricos , Transferência de Pacientes/estatística & dados numéricos , Procedimentos Cirúrgicos Operatórios/mortalidadeRESUMO
PURPOSE: This study investigated the association of preoperative hypoalbuminemia and postoperative complications after elective resection for rectal cancer. METHODS: From September 2009 to December 2014, all patients who underwent elective rectal resection for adenocarcinoma of the rectum were identified using a prospective colorectal cancer database. Hypoalbuminemia was defined as a serum albumin < 35 g/L. Characteristics and outcomes of hypoalbuminemic patients were compared to those of patients with normal albumin levels. Potential risk factors for postoperative major morbidity, defined as Clavien-Dindo ≥ grade 3, were analyzed by both univariate and multivariate analyses. RESULTS: Three hundred seventy patients met the inclusion criteria. Hypoalbuminemic patients (67/370 (18%)) were significantly older and had more advanced tumor stages and more comorbidities (more ASA III, higher percentage of diabetics). Furthermore, they were more likely to undergo abdominoperineal resection instead of low anterior resection and less likely to be operated laparoscopically. On univariate analysis, a higher BMI, advanced tumor stages, diabetes, open procedures, pre- and postoperative hypoalbuminemia, a higher decrease in albumin (∆ preop-postop), and conversion were significantly associated with postoperative high-grade morbidity. On multivariate analysis, diabetes, advanced tumor stages, a higher decrease in the albumin level, as well as preoperative hypoalbuminemia turned out to be independent risk factors for postoperative high-grade morbidity. CONCLUSIONS: Hypoalbuminemia is an independent risk factor for postoperative high-grade morbidity. As a low-cost and easy accessible test, serum albumin should be used as a prognostic tool to detect patients at risk for adverse outcomes after resection for rectal cancer.
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Adenocarcinoma/complicações , Adenocarcinoma/cirurgia , Hipoalbuminemia/complicações , Complicações Pós-Operatórias/etiologia , Neoplasias Retais/complicações , Neoplasias Retais/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Complicações do Diabetes/complicações , Procedimentos Cirúrgicos Eletivos/efeitos adversos , Humanos , Laparoscopia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Período Pré-Operatório , Neoplasias Retais/patologia , Fatores de Risco , Albumina Sérica/metabolismoRESUMO
AIM: The operative treatment for non-metastatic appendiceal carcinoma is controversial despite the recommendation of right hemicolectomy (RH) by many researchers. The aim of this population-based study was to compare outcomes after RH and less radical resection than right hemicolectomy (LRH). METHOD: A total of 1144 patients who underwent resection with additional lymphadenectomy of Stages I-III appendiceal carcinoma from 2004 to 2012 were identified in the Surveillance, Epidemiology and End Results database. Overall survival (OS) and cancer-specific survival (CSS) after RH and LRH were assessed by unadjusted and risk-adjusted Cox regression analysis and by propensity score matched analysis. RESULTS: A total of 855 (74.7%) patients underwent RH and 289 (25.3%) underwent LRH. In an unadjusted analysis, survival after LRH and RH did not differ in OS [hazard ratio (HR) 0.95, 95% CI 0.71-1.26, P = 0.707] and CSS (HR 0.95, 95% CI 0.69-1.32, P = 0.762). The 5-year OS and CSS in patients who underwent RH were 71.6% (95% CI 67.8-75.6%) and 76.4% (95% CI 72.8-80.3) compared with 73.8% (95% CI 67.9-80.2) and 78.7% (95% CI 73.2-84.7) in patients with LRH, respectively. No relevant difference in survival between LRH and RH could be observed in a multivariable analysis (OS, HR 0.90, 95% CI 0.65-1.25, P = 0.493; CSS, HR 0.87, 95% CI 0.60-1.26, P = 0.420) and after propensity score adjusted analysis (OS, HR 0.87, 95% CI 0.62-1.22, P = 0.442; CSS, HR 0.97, 95% CI 0.67-1.40, P = 0.883). CONCLUSIONS: In this retrospective analysis, survival after RH for non-metastatic appendiceal carcinoma was not statistically significantly superior to LRH. Hence, LRH with lymphadenectomy might be sufficient for treatment of non-metastatic appendiceal carcinoma.
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Neoplasias do Apêndice/cirurgia , Carcinoma/cirurgia , Colectomia/mortalidade , Excisão de Linfonodo/mortalidade , Idoso , Idoso de 80 Anos ou mais , Neoplasias do Apêndice/mortalidade , Neoplasias do Apêndice/patologia , Carcinoma/mortalidade , Carcinoma/patologia , Colectomia/métodos , Feminino , Humanos , Excisão de Linfonodo/métodos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Pontuação de Propensão , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Programa de SEER , Taxa de Sobrevida , Resultado do TratamentoRESUMO
TP53 mutations are associated with the lowest survival rates in acute myeloid leukemia (AML). In addition to mutations, loss of p53 function can arise via aberrant expression of proteins that regulate p53 stability and function. We examined a large AML cohort using proteomics, mutational profiling and network analyses, and showed that (1) p53 stabilization is universal in mutant TP53 samples, it is frequent in samples with wild-type TP53, and in both cases portends an equally dismal prognosis; (2) the p53 negative regulator Mdm2 is frequently overexpressed in samples retaining wild-type TP53 alleles, coupled with absence of p21 expression and dismal prognosis similar to that of cases with p53 stabilization; (3) AML samples display unique patterns of p53 pathway protein expression, which segregate prognostic groups with distinct cure rates; (4) such patterns of protein activation unveil potential AML vulnerabilities that can be therapeutically exploited.
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Biomarcadores Tumorais/metabolismo , Leucemia Mieloide Aguda/patologia , Mutação , Proteína Supressora de Tumor p53/genética , Proteína Supressora de Tumor p53/metabolismo , Idoso , Biomarcadores Tumorais/genética , Feminino , Seguimentos , Humanos , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/metabolismo , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Fosforilação , Prognóstico , Análise Serial de Proteínas , Processamento de Proteína Pós-Traducional , Estabilidade Proteica , Proteínas Proto-Oncogênicas c-mdm2/genética , Proteínas Proto-Oncogênicas c-mdm2/metabolismo , Taxa de Sobrevida , Proteína Supressora de Tumor p53/químicaRESUMO
In this study, 11 microsatellite markers were used to determine the structure of West Greenlandic lumpfish Cyclopterus lumpus populations across six spawning locations spanning >1500 km and compared with neighbouring populations in Canada and Iceland. To evaluate whether data allow for identification of origin of C. lumpus in Greenlandic waters, genetic assignment analysis was performed for 86 C. lumpus sampled on a feeding migration. Significant structuring with isolation by distance was observed in the West Greenland samples and two major subpopulations, north and south, were suggested. Based on FST values, closer relationships were observed between Greenland and Canada, than Greenland and Iceland. Surprisingly, the North Greenland population showed more similarities with Canadian samples, than did the geographically closer south-west Greenland population. Origin could be assigned for a high proportion of non-spawning fish and demonstrated a marked east-west spatial separation of fish of Greenlandic and Icelandic genotypes.
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Variação Genética , Perciformes/genética , Migração Animal , Animais , Canadá , Groenlândia , Islândia , Repetições de Microssatélites , Filogenia , Isolamento SocialRESUMO
AIM: Older data suggest that colonic resection has a negative impact on continence and quality of life. The aim of this study was to evaluate the functional outcome of colonic resections for colonic cancer and diverticulitis and its influence on quality of life. METHODS: Patients who underwent colonic resection between 2005 and 2013 were identified from a prospective database. A survey with two questionnaires [Faecal Incontinence Quality of Life (FIQL) scale, Short Form 12 (SF-12)] and additional questions concerning bowel function was sent to all patients. RESULTS: Colonic resection was performed in 362 patients in the study period; 297 patients returned the questionnaires (response rate 82.0%). Faecal urgency or incontinence more than once a month was present in 15% of patients and 25% of patients reported that bowel symptoms limited their quality of life. The mean total FIQL score for all patients was 3.58. The SF-12 score was comparable to a reference population without prior colonic resection. Patients after right-sided resections had liquid stool more often than others (45.3% vs 38.7%, P = 0.011). No differences in bowel function and quality of life were detected between resections for colonic cancer and diverticulitis. CONCLUSION: Most patients experience no limitation in bowel function after segmental colectomy. Those with limitations in bowel function still seem to cope well, as the quality of life is not severely affected. Nevertheless, most patients with lower functional scores also had lower quality of life scores. Whether surgery is a relevant factor has to be questioned, as the prevalence of faecal incontinence in a comparable population without prior surgery is almost identical.