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Hupkens BJP, Maas M, Martens MH, van der Sande ME, Lambregts DMJ, Breukink SO, Melenhorst J, Houwers JB, Hoff C, Sosef MN, Leijtens JWA, Berbee M, Beets-Tan RGH, Beets GL. Organ Preservation in Rectal Cancer After Chemoradiation: Should We Extend the Observation Period in Patients with a Clinical Near-Complete Response? Ann Surg Oncol 2017; 25:197-203. [PMID: 29134378 DOI: 10.1245/s10434-017-6213-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Indexed: 01/05/2023]
Abstract
BACKGROUND To assess whether extending the observation period in patients with a near clinical complete response (near cCR) after chemoradiation (CRT) leads to an impaired oncological outcome. METHODS Patients who had a clinical complete response (cCR) 8-10 weeks after CRT restaging with magnetic resonance imaging and endoscopy were offered a watch-and-wait strategy (W&W1), while patients with a near cCR were offered to undergo local excision or a second restaging 6-12 weeks later. Patients who achieved a cCR at the second restaging were also offered a watch-and-wait strategy (W&W2). RESULTS Overall, 102 patients with a cCR at the first restaging immediately entered the W&W1, while the remaining 68 patients had a near cCR: 19 patients underwent transanal endoscopic microsurgery and 49 patients opted for a second restaging. Additionally, 44/49 (90%) patients showed a cCR at the second restaging and entered the W&W2. Patients in the W&W1 group had a 2-year local regrowth-free rate (LRFR) of 84% and 2-year overall survival (OS) of 99%, while patients in the W&W2 group had a 2-year LRFR of 73% and OS of 98% (p > 0.05). Multivariable Cox regression analyses showed that late inclusion was not a significant predictive factor for higher risk of LR or lower non-regrowth disease-free survival. CONCLUSIONS Overall, 90% of patients with a near cCR 8-10 weeks after CRT will proceed to a cCR 6-12 weeks later; therefore, it seems logical to extend the observation period rather than to proceed to surgery. Although there is a non-significant increase in local regrowth rate in these patients, it does not seem to impact the oncological outcome.
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Larue RTHM, van Timmeren JE, de Jong EEC, Feliciani G, Leijenaar RTH, Schreurs WMJ, Sosef MN, Raat FHPJ, van der Zande FHR, Das M, van Elmpt W, Lambin P. Influence of gray level discretization on radiomic feature stability for different CT scanners, tube currents and slice thicknesses: a comprehensive phantom study. Acta Oncol 2017; 56:1544-1553. [PMID: 28885084 DOI: 10.1080/0284186x.2017.1351624] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Radiomic analyses of CT images provide prognostic information that can potentially be used for personalized treatment. However, heterogeneity of acquisition- and reconstruction protocols influences robustness of radiomic analyses. The aim of this study was to investigate the influence of different CT-scanners, slice thicknesses, exposures and gray-level discretization on radiomic feature values and their stability. MATERIAL AND METHODS A texture phantom with ten different inserts was scanned on nine different CT-scanners with varying tube currents. Scans were reconstructed with 1.5 mm or 3 mm slice thickness. Image pre-processing comprised gray-level discretization in ten different bin widths ranging from 5 to 50 HU and different resampling methods (i.e., linear, cubic and nearest neighbor interpolation to 1 × 1 × 3 mm3 voxels) were investigated. Subsequently, 114 textural radiomic features were extracted from a 2.1 cm3 sphere in the center of each insert. The influence of slice thickness, exposure and bin width on feature values was investigated. Feature stability was assessed by calculating the concordance correlation coefficient (CCC) in a test-retest setting and for different combinations of scanners, tube currents and slice thicknesses. RESULTS Bin width influenced feature values, but this only had a marginal effect on the total number of stable features (CCC > 0.85) when comparing different scanners, slice thicknesses or exposures. Most radiomic features were affected by slice thickness, but this effect could be reduced by resampling the CT-images before feature extraction. Statistics feature 'energy' was the most dependent on slice thickness. No clear correlation between feature values and exposures was observed. CONCLUSIONS CT-scanner, slice thickness and bin width affected radiomic feature values, whereas no effect of exposure was observed. Optimization of gray-level discretization to potentially improve prognostic value can be performed without compromising feature stability. Resampling images prior to feature extraction decreases the variability of radiomic features.
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Klinkert M, de Jong MC, Sosef MN, van Nunen AB, Belgers HJ. Surgical treatment of a rare complication after endoscopic stent placement for anastomotic leakage after esophageal resection. World J Surg Proced 2017; 7:1-5. [DOI: 10.5412/wjsp.v7.i1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/21/2017] [Accepted: 04/07/2017] [Indexed: 02/07/2023] Open
Abstract
The best approach to achieve cure in esophageal cancer is a combination of chemo-radiation and surgery. However, complications occur in half of patients. The current report, reports a rare but severe complication: Complete obstruction of the esophagus, induced by preoperative chemo-radiation therapy. Normally, strictures are treated by repeated dilatations, however, in case of complete obstruction, the perforation rate of standard blind anterograde wire access and dilation is severely increased. In order to minimize the risk of perforations, the rendezvous technique was introduced. This technique involves an anterograde approach in combination with a retrograde approach in order to open and dilatate the esophagus. While technical success rates between 83% and 100% have been reported in literature, data on clinical outcomes are scarcer. The limited amount of studies available claim that success was achieved in almost half of patients. The patient in our case currently has an oral diet without restrictions and rates his quality of life with a VAS-score ten out of ten.
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Larue RTHM, Van De Voorde L, Berbée M, van Elmpt WJC, Dubois LJ, Panth KM, Peeters SGJA, Claessens A, Schreurs WMJ, Nap M, Warmerdam FARM, Erdkamp FLG, Sosef MN, Lambin P. A phase 1 'window-of-opportunity' trial testing evofosfamide (TH-302), a tumour-selective hypoxia-activated cytotoxic prodrug, with preoperative chemoradiotherapy in oesophageal adenocarcinoma patients. BMC Cancer 2016; 16:644. [PMID: 27535748 PMCID: PMC4989456 DOI: 10.1186/s12885-016-2709-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 08/11/2016] [Indexed: 01/03/2023] Open
Abstract
Background Neo-adjuvant chemoradiotherapy followed by surgery is the standard treatment with curative intent for oesophageal cancer patients, with 5-year overall survival rates up to 50 %. However, patients’ quality of life is severely compromised by oesophagectomy, and eventually many patients die due to metastatic disease. Most solid tumours, including oesophageal cancer, contain hypoxic regions that are more resistant to chemoradiotherapy. The hypoxia-activated prodrug evofosfamide works as a DNA-alkylating agent under these hypoxic conditions, which directly kills hypoxic cancer cells and potentially minimizes resistance to conventional therapy. This drug has shown promising results in several clinical studies when combined with chemotherapy. Therefore, in this phase I study we investigate the safety of evofosfamide added to the chemoradiotherapy treatment of oesophageal cancer. Methods/Design A phase I, non-randomized, single-centre, open-label, 3 + 3 trial with repeated hypoxia PET imaging, will test the safety of evofosfamide in combination with neo-adjuvant chemoradiotherapy in potentially resectable oesophageal adenocarcinoma patients. Investigated dose levels range from 120 mg/m2 to 340 mg/m2. Evofosfamide will be administered one week before the start of chemoradiotherapy (CROSS-regimen) and repeated weekly up to a total of six doses. PET/CT acquisitions with hypoxia tracer 18F-HX4 will be made before and after the first administration of evofosfamide, allowing early assessment of changes in hypoxia, accompanied with blood sampling to measure hypoxia blood biomarkers. Oesophagectomy will be performed according to standard clinical practice. Higher grade and uncommon non-haematological, haematological, and post-operative toxicities are the primary endpoints according to the CTCAEv4.0 and Clavien-Dindo classifications. Secondary endpoints are reduction in hypoxic fraction based on 18F-HX4 imaging, pathological complete response, histopathological negative circumferential resection margin (R0) rate, local and distant recurrence rate, and progression free and overall survival. Discussion This is the first clinical trial testing evofosfamide in combination with chemoradiotherapy. The primary objective is to determine the dose limiting toxicity of this combined treatment and herewith to define the maximum tolerated dose and recommended phase 2 dose for future clinical studies. The addition of non-invasive repeated hypoxia imaging (‘window-of-opportunity’) enables us to identify the biologically effective dose. We believe this approach could also be used for other hypoxia targeted drugs. Trial registration ClinicalTrials.gov Identifier: NCT02598687.
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Haverkamp L, Parry K, van Berge Henegouwen MI, van Laarhoven HW, Bonenkamp JJ, Bisseling TM, Siersema PD, Sosef MN, Stoot JH, Beets GL, de Steur WO, Hartgrink HH, Verspaget HW, van der Peet DL, Plukker JT, van Etten B, Wijnhoven BPL, van Lanschot JJ, van Hillegersberg R, Ruurda JP. Esophageal and Gastric Cancer Pearl: a nationwide clinical biobanking project in the Netherlands. Dis Esophagus 2016; 29:435-41. [PMID: 25824294 DOI: 10.1111/dote.12347] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Esophageal and gastric cancer is associated with a poor prognosis since many patients develop recurrent disease. Treatment requires specific expertise and a structured multidisciplinary approach. In the Netherlands, this type of expertise is mainly found at the University Medical Centers (UMCs) and a few specialized nonacademic centers. Aim of this study is to implement a national infrastructure for research to gain more insight in the etiology and prognosis of esophageal and gastric cancer and to evaluate and improve the response on (neoadjuvant) treatment. Clinical data are collected in a prospective database, which is linked to the patients' biomaterial. The collection and storage of biomaterial is performed according to standard operating procedures in all participating UMCs as established within the Parelsnoer Institute. The collected biomaterial consists of tumor biopsies, blood samples, samples of malignant and healthy tissue of the resected specimen and biopsies of recurrence. The collected material is stored in the local biobanks and is encoded to respect the privacy of the donors. After approval of the study was obtained from the Institutional Review Board, the first patient was included in October 2014. The target aim is to include 300 patients annually. In conclusion, the eight UMCs of the Netherlands collaborated to establish a nationwide database of clinical information and biomaterial of patients with esophageal and gastric cancer. Due to the national coverage, a high number of patients are expected to be included. This will provide opportunity for future studies to gain more insight in the etiology, treatment and prognosis of esophageal and gastric cancer.
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Noordman BJ, Shapiro J, Spaander MC, Krishnadath KK, van Laarhoven HW, van Berge Henegouwen MI, Nieuwenhuijzen GA, van Hillegersberg R, Sosef MN, Steyerberg EW, Wijnhoven BP, van Lanschot JJB. Accuracy of Detecting Residual Disease After Cross Neoadjuvant Chemoradiotherapy for Esophageal Cancer (preSANO Trial): Rationale and Protocol. JMIR Res Protoc 2015; 4:e79. [PMID: 26121676 PMCID: PMC4526968 DOI: 10.2196/resprot.4320] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 04/03/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Results from the recent CROSS trial showed that neoadjuvant chemoradiotherapy (nCRT) significantly increased survival as compared to surgery alone in patients with potentially curable esophageal cancer. Furthermore, in the nCRT arm 49% of patients with a squamous cell carcinoma (SCC) and 23% of patients with an adenocarcinoma (AC) had a pathologically complete response in the resection specimen. These results provide a rationale to reconsider and study the timing and necessity of esophagectomy in (all) patients after application of the CROSS regimen. OBJECTIVE We propose a "surgery as needed" approach after completion of nCRT. In this approach, patients will undergo active surveillance after completion of nCRT. Surgical resection would be offered only to those patients in whom residual disease or a locoregional recurrence is highly suspected or proven. However, before a surgery as needed approach in oesophageal cancer patients (SANO) can be tested in a randomized controlled trial, we aim to determine the accuracy of detecting the presence or absence of residual disease after nCRT (preSANO trial). METHODS This study is set up as a prospective, single arm, multicenter, diagnostic trial. Operable patients with potentially curable SCC or AC of the esophagus or esophagogastric junction will be included. Approximately 4-6 weeks after completion of nCRT all included patients will undergo a first clinical response evaluation (CRE-I) including endoscopy with (random) conventional mucosal biopsies of the primary tumor site and of any other suspected lesions in the esophagus and radial endo-ultrasonography (EUS) for measurement of tumor thickness and area. Patients in whom no locoregional or disseminated disease can be proven by cytohistology will be offered a postponed surgical resection 6-8 weeks after CRE-I (ie, approximately 12-14 weeks after completion of nCRT). In the week preceding the postponed surgical resection, a second clinical response evaluation (CRE-II) will be planned that will include a whole body PET-CT, followed again by endoscopy with (random) conventional mucosal biopsies of the primary tumor site and any other suspected lesions in the esophagus, radial EUS for measurement of tumor thickness and area, and linear EUS plus fine needle aspiration of PET-positive lesions and/or suspected lymph nodes. The main study parameter is the correlation between the clinical response assessment during CRE-I and CRE-II and the final pathological response in the resection specimen. RESULTS The first patient was enrolled on July 23, 2013, and results are expected in January 2016. CONCLUSIONS If this preSANO trial shows that the presence or absence of residual tumor can be predicted reliably 6 or 12 weeks after completion of nCRT, a randomized trial comparing nCRT plus standard surgery versus chemoradiotherapy plus "surgery as needed" will be conducted (SANO trial). TRIAL REGISTRATION Netherlands Trial Register: NTR4834; http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=4834 (archived by Webcite at http://www.webcitation.org/6Ze7mn67B).
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Tegels JJW, Hulsewé KWE, Sosef MN, Stoot JHMB. Morbidity and mortality after total gastrectomy for gastric malignancy: do not forget about geriatric frailty and nutrition. Surgery 2015; 157:406-7. [PMID: 25616952 DOI: 10.1016/j.surg.2014.10.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 10/28/2014] [Indexed: 11/28/2022]
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Reisinger KW, Bosmans JWAM, Uittenbogaart M, Alsoumali A, Poeze M, Sosef MN, Derikx JPM. Loss of Skeletal Muscle Mass During Neoadjuvant Chemoradiotherapy Predicts Postoperative Mortality in Esophageal Cancer Surgery. Ann Surg Oncol 2015; 22:4445-52. [PMID: 25893413 PMCID: PMC4644199 DOI: 10.1245/s10434-015-4558-4] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Indexed: 12/15/2022]
Abstract
Background Esophageal surgery is associated with complications and mortality. It is highly important to develop tools predicting unfavorable postoperative outcome. Esophageal cancer and neoadjuvant chemoradiotherapy (CRT) induce skeletal muscle wasting, which leads to diminished physiologic reserves. The purpose of this study was to investigate whether the degree of muscle mass lost during neoadjuvant CRT predicts postoperative mortality. Methods A total of 123 consecutive patients undergoing surgery for esophageal malignancy in the period 2008–2012 were included, of whom 114 received neoadjuvant CRT. Skeletal muscle mass was measured on routinely performed CT scans by assessing L3 muscle index (according to the Prado method) before and after neoadjuvant CRT, and the amount of muscle mass lost during neoadjuvant CRT (muscle loss index) was calculated. It was investigated whether this amount was associated with postoperative 30-day or in-hospital mortality and morbidity. Results In the complete cohort, no significant association between loss of muscle mass and mortality was found. However, skeletal muscle mass was significantly lower in patients with stage III–IV tumors compared with stage I–II tumors, prior to neoadjuvant CRT. In the stage III–IV subgroup, the amount of muscle mass lost during neoadjuvant CRT was predictive of postoperative mortality: −13.5 % (standard deviation 6.2 %) in patients who died postoperatively compared with −5.0 % (standard deviation 8.3 %) in surviving patients, p = 0.02. Conclusions Measurement of muscle mass loss during neoadjuvant chemoradiotherapy may provide a readily available and inexpensive assessment to identify patients at risk for developing unfavorable postoperative outcome after resection of esophageal malignancies, especially in patients with stage III–IV tumors.
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Blom RLGM, Bogush T, Brücher BLDM, Chang AC, Davydov M, Dudko E, Leong T, Polotsky B, Swanson PE, van Rossum PSN, Ruurda JP, Sagaert X, Tjulandin S, Schraepen MC, Sosef MN, van Hillegersberg R. Therapeutic approaches to gastroesophageal junction adenocarcinomas. Ann N Y Acad Sci 2015; 1325:197-210. [PMID: 25266026 DOI: 10.1111/nyas.12532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The following, from the 12th OESO World Conference: Cancers of the Esophagus, includes commentaries on the distinction between adenocarcinomas above, below, or within the gastroesophageal junction; combined modality therapy; tumor markers for use in personalized medicine; PET-CT and endoscopic biopsies in the evaluation of response to neoadjuvant chemoradiation therapy; a standardized grading system for tumor regression in squamous cell cancer and adenocarcinoma; the experimental basis for new approaches to medical treatment; the criteria measuring response in esophageal cancer; and the impact of novel imaging on staging and response assessment.
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Gardenbroek TJ, Pinkney TD, Sahami S, Morton DG, Buskens CJ, Ponsioen CY, Tanis PJ, Löwenberg M, van den Brink GR, Broeders IA, Pullens PH, Seerden T, Boom MJ, Mallant-Hent RC, Pierik RE, Vecht J, Sosef MN, van Nunen AB, van Wagensveld BA, Stokkers PC, Gerhards MF, Jansen JM, Acherman Y, Depla AC, Mannaerts GH, West R, Iqbal T, Pathmakanthan S, Howard R, Magill L, Singh B, Htun Oo Y, Negpodiev D, Dijkgraaf MG, Ram D'Haens G, Bemelman WA. The ACCURE-trial: the effect of appendectomy on the clinical course of ulcerative colitis, a randomised international multicenter trial (NTR2883) and the ACCURE-UK trial: a randomised external pilot trial (ISRCTN56523019). BMC Surg 2015; 15:30. [PMID: 25887789 PMCID: PMC4393565 DOI: 10.1186/s12893-015-0017-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 02/26/2015] [Indexed: 12/18/2022] Open
Abstract
Background Over the past 20 years evidence has accumulated confirming the immunomodulatory role of the appendix in ulcerative colitis (UC). This led to the idea that appendectomy might alter the clinical course of established UC. The objective of this body of research is to evaluate the short-term and medium-term efficacy of appendectomy to maintain remission in patients with UC, and to establish the acceptability and cost-effectiveness of the intervention compared to standard treatment. Methods/Design These paired phase III multicenter prospective randomised studies will include patients over 18 years of age with an established diagnosis of ulcerative colitis and a disease relapse within 12 months prior to randomisation. Patients need to have been medically treated until complete clinical (Mayo score <3) and endoscopic (Mayo score 0 or 1) remission. Patients will then be randomised 1:1 to a control group (maintenance 5-ASA treatment, no appendectomy) or elective laparoscopic appendectomy plus maintenance treatment. The primary outcome measure is the one year cumulative UC relapse rate - defined both clinically and endoscopically as a total Mayo-score ≥5 with endoscopic subscore of 2 or 3. Secondary outcomes that will be assessed include the number of relapses per patient at 12 months, the time to first relapse, health related quality of life and treatment costs, and number of colectomies in each arm. Discussion The ACCURE and ACCURE-UK trials will provide evidence on the role and acceptability of appendectomy in the treatment of ulcerative colitis and the effects of appendectomy on the disease course. Trial registration NTR2883; ISRCTN56523019
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Weijs TJ, Toxopeus ELA, Ruurda JP, Luyer MDP, Nieuwenhuijzen GAP, Schraepen MC, Sosef MN, Wijnhoven BPL, Schets IRM, Bleys RLAW, van Hillegersberg R. Leaving a mobilized thoracic esophagus in situ when incurable cancer is discovered intraoperatively. Ann Thorac Surg 2014; 99:490-4. [PMID: 25499476 DOI: 10.1016/j.athoracsur.2014.08.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 08/19/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Occasionally incurable cancer is encountered after completion of the thoracic (first) phase of a three-phase esophagectomy. The outcome of aborting the operation at this stage, leaving the mobilized thoracic esophagus in situ, is unknown. METHODS A multicenter retrospective analysis was performed of patients in whom a completely mobilized thoracic esophagus was left in situ when incurable disease was discovered intraoperatively. The occurrence of esophageal necrosis or perforation, mortality, and all other adverse events were recorded and graded by severity. RESULTS Some 18 patients were included. The median admission time was 9 days. All patients had resumed oral intake at discharge, except for 1 patient who was fed through a nasojejunal tube. After the operation, the median overall survival was 2.9 months. Postoperatively, 7 patients (39%) experienced major surgical adverse events, and 11 patients (61%) had no or only minor adverse events. Major adverse events were associated with the patient's death in 6 patients (33%), within 5 to 34 days postoperatively. Esophageal perforation or ischemia developed in 4 patients (22%) and 1 patient (6%), respectively. No predictive factors could be identified. CONCLUSIONS Leaving a completely mobilized thoracic esophagus in situ when incurable cancer was discovered intraoperatively was a successful strategy in more than half of the patients. However, one third experienced major adverse events leading to mortality.
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Japink D, Nap M, Sosef MN, Nelemans PJ, Coy JF, Beets G, von Meyenfeldt MF, Leers MP. Reproducibility studies for experimental epitope detection in macrophages (EDIM). J Immunol Methods 2014; 407:40-7. [DOI: 10.1016/j.jim.2014.03.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 03/19/2014] [Accepted: 03/20/2014] [Indexed: 10/25/2022]
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Valkenet K, Trappenburg JCA, Gosselink R, Sosef MN, Willms J, Rosman C, Pieters H, Scheepers JJG, de Heus SC, Reynolds JV, Guinan E, Ruurda JP, Rodrigo EHE, Nafteux P, Fontaine M, Kouwenhoven EA, Kerkemeyer M, van der Peet DL, Hania SW, van Hillegersberg R, Backx FJG. Preoperative inspiratory muscle training to prevent postoperative pulmonary complications in patients undergoing esophageal resection (PREPARE study): study protocol for a randomized controlled trial. Trials 2014; 15:144. [PMID: 24767575 PMCID: PMC4019558 DOI: 10.1186/1745-6215-15-144] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 04/03/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Esophageal resection is associated with a high incidence of postoperative pneumonia. Respiratory complications account for almost half of the readmissions to the critical care unit. Postoperative complications can result in prolonged hospital stay and consequently increase healthcare costs. In cardiac surgery a preoperative inspiratory muscle training program has shown to prevent postoperative pneumonia and reduce length of hospital stay. While in some surgical centers inspiratory muscle training is already used in the preoperative phase in patients undergoing esophageal resection, the added value of this intervention on the reduction of pulmonary complications has not yet been investigated in large surgical populations other than cardiac surgery in a randomized and controlled study design. METHODS/DESIGN The effect of a preoperative inspiratory muscle training program on the incidence of postoperative pneumonia in patients undergoing esophageal resection will be studied in a single blind multicenter randomized controlled trial (the PREPARE study). In total 248 patients (age >18 years) undergoing esophageal resection for esophageal cancer will be included in this study. They are randomized to either usual care or usual care with an additional inspiratory muscle training intervention according to a high-intensity protocol which is performed with a tapered flow resistive inspiratory loading device. Patients have to complete 30 dynamic inspiratory efforts twice daily for 7 days a week until surgery with a minimum of 2 weeks. The starting training load will be aimed to be 60% of maximal inspiratory pressure and will be increased based on the rate of perceived exertion.The main study endpoint is the incidence of postoperative pneumonia. Secondary objectives are to evaluate the effect of preoperative inspiratory muscle training on length of hospital stay, duration of mechanical ventilation, incidence of other postoperative (pulmonary) complications, quality of life, and on postoperative respiratory muscle function and lung function. DISCUSSION The PREPARE study is the first multicenter randomized controlled trial to evaluate the hypothesis that preoperative inspiratory muscle training leads to decreased pulmonary complications in patients undergoing esophageal resection. TRIAL REGISTRATION NCT01893008.
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Blom RLGM, Sosef MN, Nap M, Lammering G, van den Berkmortel F, Hulshof MCCM, Meijer SL, Wilmink HW, van Berge Henegouwen MI. Comparison of two neoadjuvant chemoradiotherapy regimens in patients with potentially curable esophageal carcinoma. Dis Esophagus 2013; 27:380-7. [PMID: 24006852 DOI: 10.1111/dote.12110] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The implementation of neoadjuvant chemoradiotherapy (CRT) in esophageal cancer (EC) patients has led to improved survival rates. Worldwide, different CRT regimens are applied. It is unknown how these regimens relate to each other regarding efficacy. Therefore, the aim of this study was to determine the preferred regimen regarding toxicity of, response to CRT, and long-term survival after esophagectomy in EC patients. EC patients in two centers who underwent CRT with different regimens prior to surgery were included in this study. CRT consisted of 50.4Gy combined with two cycles of cisplatin and 5-FU(center A), or 41.4Gy combined with five cycles of carboplatin and paclitaxel (center B). Toxicity, response to therapy and long-term survival were compared between groups. One hundred sisty-five patients were included. Forty-one percent of patients in center A developed ≥1 toxicity ≥ grade 3 versus 25% in center B (P = 0.025). CRT with a cisplatin-based regimen was an independent predictor for development of toxicity ≥ grade 3 (P = 0.043). There were no differences in response between both regimens (P = 0.904). Three-year survival was 61% (A) versus 57% (B) (P = 0.725). The carboplatin/paclitaxel/41.4Gy regimen causes less toxicity compared to the cisplatin/5-FU/50.4Gy regimen with nonsignificant differences in response rates and long-term survival; therefore our results support this regimen to be the preferred regimen for EC patients.
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Blom RLGM, Vliegen RFA, Schreurs WMJ, Belgers HJ, Stohr I, Oostenbrug LE, Sosef MN. External ultrasonography of the neck does not add diagnostic value to integrated positron emission tomography-computed tomography (PET-CT) scanning in the diagnosis of cervical lymph node metastases in patients with esophageal carcinoma. Dis Esophagus 2012; 25:555-9. [PMID: 22150869 DOI: 10.1111/j.1442-2050.2011.01289.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
One of the objectives of preoperative imaging in esophageal cancer patients is the detection of cervical lymph node metastases. Traditionally, external ultrasonography of the neck has been combined with computed tomography (CT) in order to improve the detection of cervical metastases. In general, integrated positron emission tomography-computed tomography (PET-CT) has been shown to be superior to CT or PET regarding staging and therefore may limit the role of external ultrasonography of the neck. The objective of this study was to determine the additional value of external ultrasonography of the neck to PET-CT. This study included all patients referred our center for treatment of esophageal carcinoma. Diagnostic staging was performed to determine treatment plan. Cervical lymph nodes were evaluated by external ultrasonography of the neck and PET-CT. In case of suspect lymph nodes on external ultrasonography or PET-CT, fine needle aspiration (FNA) was performed. Between 2008 and 2010, 170 out of 195 referred patients underwent both external ultrasonography of the neck and PET-CT. Of all patients, 84% were diagnosed with a tumor at or below the distal esophagus. In 140 of 170 patients, the cervical region was not suspect; no FNA was performed. Seven out of 170 patients had suspect nodes on both PET-CT and external ultrasonography. Five out of seven patients had cytologically confirmed malignant lymph nodes, one of seven had benign nodes, in one patient FNA was not performed; exclusion from esophagectomy was based on intra-abdominal metastases. In one out of 170 patients, PET-CT showed suspect nodes combined with a negative external ultrasonography; cytology of these nodes was benign. Twenty-two out of 170 patients had a negative PET-CT with suspect nodes on external ultrasonography. In 18 of 22 patients, cervical lymph nodes were cytologically confirmed benign; in four patients, FNA was not possible or inconclusive. At a median postoperative follow-up of 15 months, only 1% of patients developed cervical lymph node metastases. This study shows no additional value of external ultrasonography to a negative PET-CT. According to our results, it can be omitted in the primary workup. However, suspect lymph nodes on PET-CT should be confirmed by FNA to exclude false positives if it would change treatment plan.
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Gorissen KJ, Benning D, Berghmans T, Snoeijs MG, Sosef MN, Hulsewe KWE, Luyer MDP. Risk of anastomotic leakage with non-steroidal anti-inflammatory drugs in colorectal surgery. Br J Surg 2012; 99:721-7. [PMID: 22318712 DOI: 10.1002/bjs.8691] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2012] [Indexed: 12/18/2022]
Abstract
BACKGROUND With the implementation of multimodal analgesia regimens in fast-track surgery programmes, non-steroidal anti-inflammatory drugs (NSAIDs) are being prescribed routinely. However, doubts have been raised concerning the safety of NSAIDs in terms of anastomotic healing. METHODS Data on patients who had undergone primary colorectal anastomosis at two teaching hospitals between January 2008 and December 2010 were analysed retrospectively. Exact use of NSAIDs was recorded. Rates of anastomotic leakage were compared between groups and corrected for known risk factors in both univariable and multivariable analyses. RESULTS A total of 795 patients were divided into four groups according to NSAID use: no NSAIDs (471 patients), use of non-selective NSAIDs (201), use of selective cyclo-oxygenase (COX) 2 inhibitors (79), and use of both selective and non-selective NSAIDs (44). The overall leak rate was 9.9 per cent (10.0 per cent for right colonic, 8.7 per cent for left colonic and 12.4 per cent for rectal anastomoses). Known risk factors such as smoking and use of steroids were not significantly associated with anastomotic leakage. Stapled anastomosis was identified as an independent predictor of leakage in multivariable analysis (odds ratio (OR) 2.22, 95 per cent confidence interval 1.30 to 3.80; P = 0.003). Patients on NSAIDs had higher anastomotic leakage rates than those not on NSAIDs (13.2 versus 7.6 per cent; OR 1.84, 1.13 to 2.98; P = 0.010). This effect was mainly due to non-selective NSAIDs (14.5 per cent; OR 2.13, 1.24 to 3.65; P = 0.006), not selective COX-2 inhibitors (9 per cent; OR 1.16, 0.49 to 2.75; P = 0.741). The overall mortality rate was 4.2 per cent, with no significant difference between groups (P = 0.438). CONCLUSION Non-selective NSAIDs may be associated with anastomotic leakage.
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Faber TJE, Japink D, Leers MPG, Sosef MN, von Meyenfeldt MF, Nap M. Activated macrophages containing tumor marker in colon carcinoma: immunohistochemical proof of a concept. Tumour Biol 2011; 33:435-41. [PMID: 22134871 DOI: 10.1007/s13277-011-0269-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Accepted: 11/07/2011] [Indexed: 11/29/2022] Open
Abstract
The presence of carcinoembryonic antigen (CEA)-containing activated macrophages has been demonstrated in peripheral blood from patients with colorectal carcinoma. Macrophages migrate from the circulation into the tissue, phagocytose debris, and return to the bloodstream. Hence it seems likely that activated macrophages containing tumor debris, i.e., tumor marker, are present in the stroma of colorectal carcinoma. After phagocytosis, they could follow a hematogenic or lymphogenic route to the peripheral blood. The aim of this study is to assess the presence of tumor marker-containing activated macrophages in the stroma of colon carcinoma and in regional lymph nodes. From 10 cases of colon carcinoma, samples of tumor tissue and metastasis-free lymph nodes were cut in serial sections and stained for CD68 to identify macrophages and for CEA, cytokeratin, or M30 presence. Slides were digitalised and visually inspected using two monitors, comparing the CD68 stain to the tumor marker stain to evaluate the presence of tumor marker-positive macrophages. Macrophages containing tumor marker could be identified in tumor stroma and in metastasis-free regional lymph nodes. The distribution varied for the different markers, CEA-positive macrophages being most abundant. The presence of macrophages containing tumor marker in the tumor stroma and lymph nodes from patients with colon carcinoma could be confirmed in this series using serial immunohistochemistry. This finding supports the concept of activated macrophages, after phagocytosing cell debris, being transported or migrating through the lymphatic system. These results support the potential of tumor marker-containing macrophages to serve as a marker for diagnosis and follow-up of colon cancer patients.
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Biere SS, Maas KW, Bonavina L, Garcia JR, van Berge Henegouwen MI, Rosman C, Sosef MN, de Lange ESM, Bonjer HJ, Cuesta MA, van der Peet DL. Traditional invasive vs. minimally invasive esophagectomy: a multi-center, randomized trial (TIME-trial). BMC Surg 2011; 11:2. [PMID: 21226918 PMCID: PMC3031195 DOI: 10.1186/1471-2482-11-2] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Accepted: 01/12/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There is a rise in incidence of esophageal carcinoma due to increasing incidence of adenocarcinoma. Probably the only curative option to date is the use of neoadjuvant therapy followed by surgical resection. Traditional open esophageal resection is associated with a high morbidity and mortality rate. Furthermore, this approach involves long intensive care unit stay, in-hospital stay and long recovery period. Minimally invasive esophagectomy could reduce the morbidity and accelerate the post-operative recovery. METHODS/DESIGN Comparison between traditional open and minimally invasive esophagectomy in a multi-center, randomized trial. Patients with a resectable intrathoracic esophageal carcinoma, including the gastro-esophageal junction tumors (Siewert I) are eligible for inclusion. Prior thoracic surgery and cervical esophageal carcinoma are indications for exclusion. The surgical technique involves a right thoracotomy with lung blockade and laparotomy either with a cervical or thoracic anastomosis for the traditional group. The minimally invasive procedure involves a right thoracoscopy in prone position with a single lumen tube and laparoscopy either with a cervical or thoracic anastomosis. All patients in both groups will undergo identical pre-operative and post-operative protocol. Primary endpoint of this study are post-operative respiratory complications within the first two post-operative weeks confirmed by clinical, radiological and sputum culture data. Secondary endpoints are the operative data, the post-operative data and oncological data such as quality of the specimen and survival. Operative data include duration of the operation, blood loss and conversion to open procedure. Post-operative data include morbidity (major and minor), quality of life tests and hospital stay.Based on current literature and the experience of all participating centers, an incidence of pulmonary complications for 57% in the traditional arm and 29% in the minimally invasive arm, it is estimated that per arm 48 patients are needed. This is based on a two-sided significance level (alpha) of 0.05 and a power of 0.80. Knowing that approximately 20% of the patients will be excluded, we will randomize 60 patients per arm. DISCUSSION The TIME-trial is a prospective, multi-center, randomized study to define the role of minimally invasive esophageal resection in patients with resectable intrathoracic and junction esophageal cancer. TRIAL REGISTRATION (NETHERLANDS TRIAL REGISTER): NTR2452.
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Swank HA, Vermeulen J, Lange JF, Mulder IM, van der Hoeven JAB, Stassen LPS, Crolla RMPH, Sosef MN, Nienhuijs SW, Bosker RJI, Boom MJ, Kruyt PM, Swank DJ, Steup WH, de Graaf EJR, Weidema WF, Pierik REGJM, Prins HA, Stockmann HBAC, Tollenaar RAEM, van Wagensveld BA, Coene PPLO, Slooter GD, Consten ECJ, van Duijn EB, Gerhards MF, Hoofwijk AGM, Karsten TM, Neijenhuis PA, Blanken-Peeters CFJM, Cense HA, Mannaerts GHH, Bruin SC, Eijsbouts QAJ, Wiezer MJ, Hazebroek EJ, van Geloven AAW, Maring JK, D'Hoore AJL, Kartheuser A, Remue C, van Grevenstein HMU, Konsten JLM, van der Peet DL, Govaert MJPM, Engel AF, Reitsma JB, Bemelman WA. The ladies trial: laparoscopic peritoneal lavage or resection for purulent peritonitis and Hartmann's procedure or resection with primary anastomosis for purulent or faecal peritonitis in perforated diverticulitis (NTR2037). BMC Surg 2010; 10:29. [PMID: 20955571 PMCID: PMC2974662 DOI: 10.1186/1471-2482-10-29] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Accepted: 10/18/2010] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Recently, excellent results are reported on laparoscopic lavage in patients with purulent perforated diverticulitis as an alternative for sigmoidectomy and ostomy.The objective of this study is to determine whether LaparOscopic LAvage and drainage is a safe and effective treatment for patients with purulent peritonitis (LOLA-arm) and to determine the optimal resectional strategy in patients with a purulent or faecal peritonitis (DIVA-arm: perforated DIVerticulitis: sigmoidresection with or without Anastomosis). METHODS/DESIGN In this multicentre randomised trial all patients with perforated diverticulitis are included. Upon laparoscopy, patients with purulent peritonitis are treated with laparoscopic lavage and drainage, Hartmann's procedure or sigmoidectomy with primary anastomosis in a ratio of 2:1:1 (LOLA-arm). Patients with faecal peritonitis will be randomised 1:1 between Hartmann's procedure and resection with primary anastomosis (DIVA-arm). The primary combined endpoint of the LOLA-arm is major morbidity and mortality. A sample size of 132:66:66 patients will be able to detect a difference in the primary endpoint from 25% in resectional groups compared to 10% in the laparoscopic lavage group (two sided alpha = 5%, power = 90%). Endpoint of the DIVA-arm is stoma free survival one year after initial surgery. In this arm 212 patients are needed to significantly demonstrate a difference of 30% (log rank test two sided alpha = 5% and power = 90%) in favour of the patients with resection with primary anastomosis. Secondary endpoints for both arms are the number of days alive and outside the hospital, health related quality of life, health care utilisation and associated costs. DISCUSSION The Ladies trial is a nationwide multicentre randomised trial on perforated diverticulitis that will provide evidence on the merits of laparoscopic lavage and drainage for purulent generalised peritonitis and on the optimal resectional strategy for both purulent and faecal generalised peritonitis. TRIAL REGISTRATION Nederlands Trial Register NTR2037.
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Bakker CM, Vliegen RFA, Sosef MN. Nausea caused by a jejunal lipoma. Clin Gastroenterol Hepatol 2009; 7:A16. [PMID: 19268723 DOI: 10.1016/j.cgh.2008.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2008] [Revised: 12/13/2008] [Accepted: 12/16/2008] [Indexed: 02/07/2023]
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Japink D, Leers MPG, Sosef MN, Nap M. CEA in activated macrophages. New diagnostic possibilities for tumor markers in early colorectal cancer. Anticancer Res 2009; 29:3245-3251. [PMID: 19661342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND Serum tumor markers show low sensitivity, making them unsuitable for early detection of cancer. Activated macrophages (AM) from peripheral blood can accumulate tumor marker substances and facilitate early detection in prostate cancer. Here it was investigated whether carcinoembryonic antigen (CEA)-containing macrophages (CEACM) can be used to detect colorectal cancer (CRC) at earlier stages than can serum CEA. PATIENTS AND METHODS Peripheral blood was collected from patients with CRC (n=48), inflammatory colorectal disease (n=5) and from healthy controls (n=18). After separating and labeling AM with CD14-APC/CD16-FITC, AM were intracellularly labeled with anti-CEA antibody and flow cytometrically analyzed. Serum CEA and C-reactive protein (CRP) were measured. RESULTS The fraction-size of CEACM discriminated between controls and CRC patients, irrespective of AJCC stage (AJCC stage I-IV, p< or =0.0001). Serum CEA values were significantly elevated in AJCC stage II, III and IV (p=0.02, 0.006 and <0.0001, respectively). Combining CEACM with CRP levels separated CRC from inflammatory colorectal disease. CONCLUSION CEACM combined with CRP appears to have diagnostic potential in early CRC.
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Eshuis EJ, Bemelman WA, van Bodegraven AA, Sprangers MAG, Bossuyt PMM, van Milligen de Wit AWM, Crolla RMPH, Cahen DL, Oostenbrug LE, Sosef MN, Voorburg AMCJ, Davids PHP, van der Woude CJ, Lange J, Mallant RC, Boom MJ, Lieverse RJ, van der Zaag ES, Houben MHMG, Vecht J, Pierik REGJM, van Ditzhuijsen TJM, Prins HA, Marsman WA, Stockmann HB, Brink MA, Consten ECJ, van der Werf SDJ, Marinelli AWKS, Jansen JM, Gerhards MF, Bolwerk CJM, Stassen LPS, Spanier BWM, Bilgen EJS, van Berkel AM, Cense HA, van Heukelem HA, van de Laar A, Slot WB, Eijsbouts QA, van Ooteghem NAM, van Wagensveld B, van den Brande JMH, van Geloven AAW, Bruin KF, Maring JK, Oldenburg B, van Hillegersberg R, de Jong DJ, Bleichrodt R, van der Peet DL, Dekkers PEP, Goei TH, Stokkers PCF. Laparoscopic ileocolic resection versus infliximab treatment of distal ileitis in Crohn's disease: a randomized multicenter trial (LIR!C-trial). BMC Surg 2008; 8:15. [PMID: 18721465 PMCID: PMC2533646 DOI: 10.1186/1471-2482-8-15] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Accepted: 08/22/2008] [Indexed: 12/24/2022] Open
Abstract
Background With the availability of infliximab, nowadays recurrent Crohn's disease, defined as disease refractory to immunomodulatory agents that has been treated with steroids, is generally treated with infliximab. Infliximab is an effective but expensive treatment and once started it is unclear when therapy can be discontinued. Surgical resection has been the golden standard in recurrent Crohn's disease. Laparoscopic ileocolic resection proved to be safe and is characterized by a quick symptom reduction. The objective of this study is to compare infliximab treatment with laparoscopic ileocolic resection in patients with recurrent Crohn's disease of the distal ileum with respect to quality of life and costs. Methods/design The study is designed as a multicenter randomized clinical trial including patients with Crohn's disease located in the terminal ileum that require infliximab treatment following recent consensus statements on inflammatory bowel disease treatment: moderate to severe disease activity in patients that fail to respond to steroid therapy or immunomodulatory therapy. Patients will be randomized to receive either infliximab or undergo a laparoscopic ileocolic resection. Primary outcomes are quality of life and costs. Secondary outcomes are hospital stay, early and late morbidity, sick leave and surgical recurrence. In order to detect an effect size of 0.5 on the Inflammatory Bowel Disease Questionnaire at a 5% two sided significance level with a power of 80%, a sample size of 65 patients per treatment group can be calculated. An economic evaluation will be performed by assessing the marginal direct medical, non-medical and time costs and the costs per Quality Adjusted Life Year (QALY) will be calculated. For both treatment strategies a cost-utility ratio will be calculated. Patients will be included from December 2007. Discussion The LIR!C-trial is a randomized multicenter trial that will provide evidence whether infliximab treatment or surgery is the best treatment for recurrent distal ileitis in Crohn's disease. Trial registration Nederlands Trial Register NTR1150
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van der Gaag NA, de Castro SMM, Rauws EAJ, Bruno MJ, van Eijck CHJ, Kuipers EJ, Gerritsen JJGM, Rutten JP, Greve JW, Hesselink EJ, Klinkenbijl JHG, Rinkes IHMB, Boerma D, Bonsing BA, van Laarhoven CJ, Kubben FJGM, van der Harst E, Sosef MN, Bosscha K, de Hingh IHJT, Th de Wit L, van Delden OM, Busch ORC, van Gulik TM, Bossuyt PMM, Gouma DJ. Preoperative biliary drainage for periampullary tumors causing obstructive jaundice; DRainage vs. (direct) OPeration (DROP-trial). BMC Surg 2007; 7:3. [PMID: 17352805 PMCID: PMC1828149 DOI: 10.1186/1471-2482-7-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Accepted: 03/12/2007] [Indexed: 01/11/2023] Open
Abstract
Background Surgery in patients with obstructive jaundice caused by a periampullary (pancreas, papilla, distal bile duct) tumor is associated with a higher risk of postoperative complications than in non-jaundiced patients. Preoperative biliary drainage was introduced in an attempt to improve the general condition and thus reduce postoperative morbidity and mortality. Early studies showed a reduction in morbidity. However, more recently the focus has shifted towards the negative effects of drainage, such as an increase of infectious complications. Whether biliary drainage should always be performed in jaundiced patients remains controversial. The randomized controlled multicenter DROP-trial (DRainage vs. Operation) was conceived to compare the outcome of a 'preoperative biliary drainage strategy' (standard strategy) with that of an 'early-surgery' strategy, with respect to the incidence of severe complications (primary-outcome measure), hospital stay, number of invasive diagnostic tests, costs, and quality of life. Methods/design Patients with obstructive jaundice due to a periampullary tumor, eligible for exploration after staging with CT scan, and scheduled to undergo a "curative" resection, will be randomized to either "early surgical treatment" (within one week) or "preoperative biliary drainage" (for 4 weeks) and subsequent surgical treatment (standard treatment). Primary outcome measure is the percentage of severe complications up to 90 days after surgery. The sample size calculation is based on the equivalence design for the primary outcome measure. If equivalence is found, the comparison of the secondary outcomes will be essential in selecting the preferred strategy. Based on a 40% complication rate for early surgical treatment and 48% for preoperative drainage, equivalence is taken to be demonstrated if the percentage of severe complications with early surgical treatment is not more than 10% higher compared to standard treatment: preoperative biliary drainage. Accounting for a 10% dropout, 105 patients are needed in each arm resulting in a study population of 210 (alpha = 0.95, beta = 0.8). Discussion The DROP-trial is a randomized controlled multicenter trial that will provide evidence whether or not preoperative biliary drainage is to be performed in patients with obstructive jaundice due to a periampullary tumor.
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Sosef MN, De Bondt RB, Bosma A, De Bruijn C, Van Gulik TM. The fate of autologous hepatocytes transplanted into spleen, pancreas, mesentery, stomach, and small bowel wall in pigs. HPB (Oxford) 2007; 9:216-8. [PMID: 18333225 PMCID: PMC2063604 DOI: 10.1080/13651820701329233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2006] [Indexed: 12/12/2022]
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Gisbertz SS, Sosef MN, Festen S, Gerhards MF. Treatment of fistulas in ano with fibrin glue. Dig Surg 2005; 22:91-4. [PMID: 15849469 DOI: 10.1159/000085299] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2004] [Accepted: 02/15/2005] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent publications show promising results using fibrin glue in the treatment of anal fistulas. The technique is simple, repeatable, with minor surgical trauma so that sphincter function is preserved and further treatment options are not compromised. The aim of this pilot study was to analyse if we could reproduce the results reported in the literature, using this simple technique. METHODS Patients with a primary or recurrent anal fistula were included in this trial. Patients with a complex fistula were excluded. Under general or spinal anaesthesia, the fistulas were curetted and injected with fibrin glue. Follow-up visits were scheduled for 1 week, 6 weeks and 6 months. RESULTS Twenty-seven patients were included. The overall success rate was 33% after a mean follow-up of 27 weeks. Patients with a recurrent fistula had a poorer outcome (success rate 14%). None of the patients suffered from postoperative continence problems, and no other complications were recorded. CONCLUSION This study confirms the safety of fibrin glue in the treatment of anal fistulas. However, a high success rate could not be reproduced.
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