Francois Baclesse Center

Caen, France

Francois Baclesse Center

Caen, France
Time filter
Source Type

Lacout A.,Center dImagerie Medicale | Thariat J.,Antoine Lacassagne Cancer Research Center | Figl A.,Antoine Lacassagne Cancer Research Center | Marcy P.-Y.,Francois Baclesse Center
Indian Journal of Radiology and Imaging | Year: 2013

Purpose: To report and evaluate qualitative elastography patterns by using gray-scale and Doppler ultrasound (US) in patients presenting with benign thyroid nodules and to evaluate the reproducibility of US elastography examinations. Materials and Methods: Institutional review board approval was obtained, and all patients provided informed consent. Over a 3-month time period, all consecutive adult patients were referred to our institution to undergo a thyroid nodule fine-needle aspiration biopsy (FNAB) procedure. Patients presenting with benign cytology according to the Bethesda 2008 classification were prospectively enrolled in the study. Each thyroid nodule was assessed by using gray-scale, Doppler US, and elastography acquisitions by a single operator (A. L.). Multiple elastography acquisitions per thyroid nodule were performed and elastography scorings of the nodules were compared with each other. Results: Nineteen patients (16 women and 3 men, mean age 58 years) with 22 thyroid nodules were included in the present study. Elastographic patterns 1, 2, and 3 were reported (23% nodules showed pattern 3). The elastography pattern showed a strong variability in 13 nodules (59%). The elastography acquisition result variability involved the "malignant" pattern 3 in 36% of cases. Conclusion: Almost one-third of benign thyroid nodules displayed pattern 3 on qualitative US elastography. The intra-observer variability of the benign thyroid elastography scoring is wide, thus limiting the thyroid nodule US examination accuracy. In FNAB-proven benign thyroid nodules, elastography pattern 3 is frequent and cannot be used as a strong indicator of thyroid malignancy.

PubMed | Institute for Radiological Protection and Nuclear Safety, University of Franche Comte and Francois Baclesse Center
Type: Journal Article | Journal: Medical physics | Year: 2016

Advanced stereotactic radiotherapy (SRT) treatments require accurate dose calculation for treatment planning especially for treatment sites involving heterogeneous patient anatomy. The purpose of this study was to evaluate the accuracy of dose calculation algorithms, Raytracing and Monte Carlo (MC), implemented in the MultiPlan treatment planning system (TPS) in presence of heterogeneities.First, the LINAC of a CyberKnife radiotherapy facility was modeled with the PENELOPE MC code. A protocol for the measurement of dose distributions with EBT3 films was established and validated thanks to comparison between experimental dose distributions and calculated dose distributions obtained with MultiPlan Raytracing and MC algorithms as well as with the PENELOPE MC model for treatments planned with the homogenous Easycube phantom. Finally, bones and lungs inserts were used to set up a heterogeneous Easycube phantom. Treatment plans with the 10, 7.5 or the 5 mm field sizes were generated in Multiplan TPS with different tumor localizations (in the lung and at the lung/bone/soft tissue interface). Experimental dose distributions were compared to the PENELOPE MC and Multiplan calculations using the gamma index method.Regarding the experiment in the homogenous phantom, 100% of the points passed for the 3%/3mm tolerance criteria. These criteria include the global error of the method (CT-scan resolution, EBT3 dosimetry, LINAC positionning ), and were used afterwards to estimate the accuracy of the MultiPlan algorithms in heterogeneous media. Comparison of the dose distributions obtained in the heterogeneous phantom is in progress.This work has led to the development of numerical and experimental dosimetric tools for small beam dosimetry. Raytracing and MC algorithms implemented in MultiPlan TPS were evaluated in heterogeneous media.

Barlesi F.,University Of Mediterranee Assistance Publique Hopitaux Of Marseille | Gervais R.,Francois Baclesse Center | Lena H.,Rennes University Hospital | Hureaux J.,Thorax and Vessel Center Academic Hospital | And 6 more authors.
Annals of Oncology | Year: 2011

Background: Brain metastases (BM) occur in up to 40% of non-small-cell lung cancer (NSCLC) patients. This trial assessed the safety and efficacy of pemetrexed-cisplatin in this population. Patients and methods: Chemonaive NSCLC patients with BM ineligible for (radio)surgery, performance status (PS) of 0 to 2, were eligible for up to six cycles of cisplatin 75 mg/m 2 and pemetrexed 500 mg/m 2 every 3 weeks. Whole -brain radiotherapy was given in case of disease progression or at chemotherapy completion. Primary end point was objective response rate (RR) on BM. Secondary end points included extracerebral and overall RR, safety profile and survival. Results: Forty-three patients were enrolled. Initial characteristics were mean age 60.4 years; males 29; PS: 0 in 37.2%, 1 in 60.5% and 2 in 22.3% of patients; adenocarcinoma in 36 patients, large cell in 4 patients (nonsquamous, 93%) and squamous carcinoma in 3 patients. Functional classification of neurological status was stage I/II 86.0%, III 2.3% and IV 11.6%. Grade 3-4 hematological toxic effects were neutropenia, 11 patients (febrile neutropenia, 1 patient), and anemia, 6 patients. Non-hematological toxic effects were grade 2 urinary infection, one patient; grade 3 pneumonia, two patients; and grade 3 hypoacousia, one patient. Cerebral, extracerebral and overall RR by intent to treat analysis were 41.9%, 34.9% and 34.9%, respectively. Median survival time and time to progression were 7.4 and 4.0 months, respectively. Conclusion: Pemetrexed-cisplatin is an effective and well-tolerated regimen as first-line therapy for NSCLC patients with BM who always suffer a poor prognosis. © The Author 2011. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved.

Toulmonde M.,Bergonie Institute | Le Cesne A.,CNRS Gustave Roussy Institute | Mendiboure J.,Bergonie Institute | Mendiboure J.,French Institute of Health and Medical Research | And 14 more authors.
Cancer | Year: 2014

BACKGROUND To the authors' knowledge, the incidence of late recurrence (> 5 years after initial management) is unknown and no prognostic factors for late events have been characterized in patients with soft tissue sarcomas. METHODS Follow-up data from patients with localized soft tissue sarcoma who were included in the French Sarcoma Group database from January 1990 to June 2005 were reviewed. The outcomes of interest were the cumulative probabilities of late (> 5 years) local and metastatic disease recurrence with death as a competing event. Estimations and 95% confidence intervals (95% CIs) were computed with the cumulative incidence function. RESULTS A total of 719 patients who were alive and event free>5 years after their initial diagnosis were included in the current study. Sixty-seven patients (9.3%) developed a late local recurrence and 42 patients (5.8%) developed a late metastatic recurrence, respectively. On multivariate analysis, internal trunk location (hazard ratio [HR], 3.9; 95% CI, 2.2-6.7 [P<.001]) and tumor size>100 mm (HR, 2.1; 95% CI, 1.1-4 [P=.035]) were the 2 factors found to be independently associated with an increased risk of late local recurrence. Grade>1 (graded according to the French Federation of Cancer Centers Sarcoma Group) (HR, 4.7; 95% CI 1.1-21 [P=.04]) was the sole factor found to be independently associated with an increased risk of late metastatic recurrence. CONCLUSIONS Late recurrence of soft tissue sarcoma is relatively uncommon. However, the results of the current study emphasize the critical role of long-term follow-up to detect late local disease recurrence in patients with retroperitoneal or very large soft tissue sarcomas, and late metastatic recurrence in patients with high-grade disease. Conversely, the prolonged follow-up of patients with grade 1 disease is not needed. © 2014 American Cancer Society.

Barillot I.,Center Regional Of Cancerologie Hs Kaplan | Barillot I.,University of Tours | Tavernier E.,French Institute of Health and Medical Research | Peignaux K.,Georges Francois Leclerc Center | And 4 more authors.
Radiotherapy and Oncology | Year: 2014

Purpose/objective Whole "conventional" pelvic irradiation (up to 45-50 Gy) following hysterectomy is associated with a high rate of adverse gastro-intestinal (GI) adverse events, of which around 60% correspond to acute grade 2 toxicity. The phase II RTCMIENDOMETRE trial was designed to test the hypothesis that IMRT could reduce the incidence of grade 2 or more acute GI toxicity to less than 30% in patients irradiated post-operatively for an endometrial cancer. Materials/methods Patients with post-operative stage Ib G3, Ic or II endometrial carcinomas with no history of chronic inflammatory bowel disease were eligible. Guidelines for volume delineation and dose prescription were detailed in the protocol. The investigators were advised to use a web-based atlas developed for the RTOG 0418 study. The dose of the vaginal and nodal PTV was 45 Gy in 25 fractions. To assess the ability of the participating centres to comply with the protocol guidelines, they were requested to complete a dummy run procedure before inclusion of their 1st patient. GI and genito-urinary (GU) toxicity were graded according to the CTCAE V 3.0 classification and were prospectively recorded every week during irradiation, as well as at time of brachytherapy insertions and during the follow-up visit at week 15 (W15). Special attention was given to note any changes to the grade of adverse events between W5 and W15. Results From May 2008 to April 2010, 49 patients from 6 centres were recruited for the trial. One patient could not be treated, one patient died of vascular stroke at W3 without toxicity, and 1 patient refused to be followed-up after treatment. Thus, 46 cases were available for analysis at W15. The distribution by stage was as follows: Ib 16.3%, Ic 64.2%, II 20.4%. Thirty six patients (75%) received an additional vaginal vault boost of 6-10 Gy delivered by HDR brachytherapy in 1 or 2 fractions. Among the 47 patients who completed IMRT, 27% (95% CI 14.5-39.7%) developed at least 1 GI grade 2 adverse event (diarrhoea in 92% of cases), which mainly occurred at W4 and W5. No event corresponding to grade 3 or above was recorded. At W15, the number of patients complaining about GI events was low: 5 patients complained about persistent grade 1 diarrhoea, and 4 patients complained about haemorrhoids. Nineteen percent (95% CI 8.9-32.6%) of patients experienced grade 2 cystitis or urinary frequency which had disappeared by W15. Conclusion In accordance with our hypothesis, post-operative IMRT resulted in a low rate (less than 30%) of acute GI grade 2 toxicity, in patients with endometrial carcinomas. At W15, no patient demonstrated a grade 2 adverse event, and the prevalence of remaining grade 1 events was less than 20%.© 2014 Elsevier Ireland Ltd. All rights reserved.

Gouerant S.,Henri Becquerel Center | Gouerant S.,Francois Baclesse Center | Leheurteur M.,Henri Becquerel Center | Chaker M.,Henri Becquerel Center | And 6 more authors.
Anticancer Research | Year: 2013

Background: Few data are published on docetaxel toxicity in obese patients. Patients and Methods: All obese patients (n=100) treated for early breast cancer during three consecutive years at our Institution, were retrospectively investigated. The same number of non-obese patients was randomly selected and used as controls. We assessed the factors predictive of the relative dose intesity (RDI) reduction, including body composition. Results: A total of 18% (n=18) of obese patients and 5% (n=5) of non-obese patients required reduction of docetaxel RDI due to toxicity (p=0.008). In a multivariate analysis, body mass index (BMI) and age were predictive of a reduction in RDI. Among the 89 patients with a determination of body composition, patients with a higher fat mass more frequently had a reduction in docetaxel RDI (p=0.002). In multivariate analysis, fat mass was the only independent factor predictive of a reduction in docetaxel RDI. Conclusion: Obese patients treated for early breast cancer more frequently required a reduction in docetaxel RDI. Fat mass seems to be the best factor predictive of a reduction in docetaxel RDI.

Bidaud P.,University of Caen Lower Normandy | Chasle J.,University of Caen Lower Normandy | Chasle J.,Francois Baclesse Center | Sichel F.,University of Caen Lower Normandy | And 6 more authors.
Histology and Histopathology | Year: 2010

Oral squamous cell carcinomas (OSCCs) are described as the result of a multistep tumorigenesis process. In order to develop useful diagnosis of premalignant lesions, expression of p53 family members and the cancer stem cell (CSCs) marker, CD44v6, were studied in histologically normal oral epithelium, precancerous lesions and succeeding invasive OSCCs. p53 was expressed focally in normal epithelium adjacent to tumors, while expression was high in intra-epithelial neoplasia and moderate in OSCC. p63 nuclear staining was important in basal and suprabasal layers of histologically normal oral mucosa and in immature compartments of premalignant lesions and cancer. In epithelium without neoplasia, intense p73 staining was observed in the basal layer, while focal expression was present in suprabasal layers. Most immature dysplastic areas showed either high or moderate staining, whereas those in OSCCs expressed low and moderate p73 level expression. CD44v6 was only expressed in poorly differentiated areas of epithelium, altered or not. p53, p63 and p73 positive stainings were statistically related in intra-epithelial neoplasia to tumours. Analysis of TP53 mutations in 17% of tumours principally revealed G>A and A>G transitions. No relation was observed between this mutational profile and different immunostainings. In conclusion, our results support that immunostaining of p53 family members might be helpful in diagnosis and monitoring of high-risk premalignant lesions of oral epithelium. The combination of staining patterns of p63, p73a and CD44v6 enabled us to isolate phenotypic undifferentiated or transient amplifying areas, reflecting the immaturity of the tumour cell lineage. While CD44v6 expression is an interesting marker of such epithelial cells, it is not specific enough to be useful alone and other phenotypic markers are needed.

Italiano A.,Institute Bergonie | Mathoulin-Pelissier S.,Institute National Of Al Sante Et Of La Recherche Medicale | Mathoulin-Pelissier S.,Bergonie Institute | Le Cesne A.,CNRS Gustave Roussy Institute | And 7 more authors.
Cancer | Year: 2011

BACKGROUND: The objective of this study was to determine whether the overall survival of patients with metastatic soft tissue sarcoma (STS) has improved over the last 20 years. METHODS: In total, 1024 patients who had synchronous metastatic (SM) STS or metachronous metastatic (MM) STS diagnosed between 1987 and 2006 were included prospectively in the French Sarcoma Group database after central histologic review. Four periods of diagnosis of metastatic disease were defined: P1, from 1987 to 1991 (n = 208); P2, from 1992 to 1996 (n = 287); P3, from 1997 to 2001 (n = 285); and P4, from 2002 to 2006 (n = 244). Patient characteristics were analyzed as prognostic factors by using a Cox model. RESULTS: The proportion of patients with SM, the interval between diagnosis and MM, and the clinical characteristics of the patients were similar across the 4 periods. Although there was no significant difference in the median overall survival (OS) from P1 through P2 (P1, 12.3 months; 95% confidence interval [CI], 9.9-14.7 months; P2, 11.4 months; 95% CI, 9-13.9 months), significant improvements were observed in the later periods (P3, 15 months; 95% CI, 11.8-18.2 months; P4, 18 months; 95% CI, 15.3-20.7 months; P = .029; log-rank test). The 2-year OS rate also increased throughout the study period from 28.1% during P1 to 38.7% during P4. On multivariate analysis, period of diagnosis, age, histologic subtype, time to metastatic recurrence, French Federation of Cancer Centers Sarcoma Group grade, and the number of metastatic sites were independent prognostic factors for OS. CONCLUSIONS: The current analysis revealed that the median OS of patients with metastatic STS had improved by 50% during the last 20 years. These data should be considered in the interpretation of results from ongoing and future STS trials. © 2010 American Cancer Society.

Morel N.,French Institute of Health and Medical Research | Morel N.,University of Caen Lower Normandy | Morel N.,EPHE Paris | Dayan J.,French Institute of Health and Medical Research | And 20 more authors.
Consciousness and Cognition | Year: 2015

Cancer involves stressful events. One aspect of cognition that is impacted by stress is episodic autobiographical memory (EAM). EAM is intimately linked to self-representation. Some studies have revealed impairment of EAM in patients with breast cancer in remission. Yet, these studies failed to differentiate between the influence of adjuvant treatments and that of psychosocial factors. We therefore assessed the psychological impact of breast cancer diagnosis on EAM and self-representation profiles prior to any adjuvant treatment. Patients newly diagnosed with breast cancer (n= 31) and women without any history of cancer (n= 49) were compared on state anxiety, EAM and its emotional characteristics, and self-representations. The most anxious patients retrieved fewer emotional details for memories than the controls, and had lower self-representation scores than the least anxious patients, who had no deficits in emotional detail retrieval. Our results revealed distinct EAM profiles for patients, reflecting two contrasting modes of coping with breast cancer. © 2015 Elsevier Inc.

Dupont B.,University of Caen Lower Normandy | Mariotte D.,University of Caen Lower Normandy | Clarisse B.,Harris Research | Galais M.-P.,Francois Baclesse Center | And 5 more authors.
Future Oncology | Year: 2014

Aim: To describe the factors associated with a high risk of a hypersensitivity reaction to cetuximab. Patients & methods: We retrospectively studied a cohort of patients living in Normandy (France) treated with cetuximab. Results: Among the 229 treated patients, 24 (10.5%) had a hypersensitivity reaction to cetuximab, including 11 grade 3-5 reactions. Detection of anti-cetuximab IgE could be performed in 108 patients. Anti-cetuximab IgE was found in 13 of 17 patients (76.5%) who had a hypersensitivity reaction to cetuximab compared with 17 of 91 control patients (18.7%; adjusted odds ratio: 14.99; 95% CI: 3.59-62.63). No clinical criteria predicted the risk of allergy to cetuximab. Conclusion: Anti-cetuximab IgE may help physicians identify patients at risk of a hypersensitivity reaction to cetuximab. © 2014 Future Medicine Ltd.

Loading Francois Baclesse Center collaborators
Loading Francois Baclesse Center collaborators