Publications by authors named "Luc Ollivier"

Article Synopsis
  • Brain radiation necrosis (BRN) is a serious complication of stereotactic radiotherapy, making it crucial to differentiate it from tumor recurrence using advanced diagnostic techniques.
  • BRN often appears months to years after treatment, with symptoms and MRI changes, influenced by factors like the amount of brain tissue irradiated and radiation dose.
  • Management strategies vary; asymptomatic cases may require monitoring, while symptomatic BRN typically responds to corticosteroids, and emerging treatments like bevacizumab show promise; ongoing research aims to improve outcomes for patients.
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A solitary bone plasmacytoma is a rare tumor. Intrahepatic cholangiocarcinoma is the second most common primary liver cancer after hepatocellular carcinoma. We present the case of a 48-year-old female patient who consulted for recent back pain, with a final diagnosis of T10 solitary plasmacytoma and synchronous intrahepatic cholangiocarcinoma.

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There are currently no accurate rules for manually delineating the subregions of the heart (cavities, vessels, aortic/mitral valves, Planning organ at Risk Volumes for coronary arteries) with the perspective of deep-learning based modeling. Our objective was to present a practical pictorial view for radiation oncologists, based on the RTOG atlas and anatomical complementary considerations for the cases where the RTOG guidelines are missing.

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  • Despite advancements in HPV vaccination and screening, about 5% of cervical cancer cases are initially diagnosed at a metastatic stage, with many patients experiencing recurrence after treatment.
  • Treatment options for recurrent or metastatic cervical cancer are currently limited, with traditional therapies primarily involving platinum-based drugs, paclitaxel, and newer immune checkpoint inhibitors showing promise for longer survival.
  • The potential for radiation therapy to induce an abscopal effect—where treatment at one site impacts tumors beyond that area—may enhance therapeutic outcomes when combined with immune therapies, suggesting a new direction in managing metastatic cervical cancer.
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  • - A 2021 survey of French radiation oncology residents found that 80% feel their brachytherapy training is inadequate, even though interest in the field remains high at 86% participation.
  • - While proficiency in certain brachytherapy techniques has slightly improved since 2012, significant gaps remain, especially in prostate brachytherapy, with many residents reporting minimal hands-on experience.
  • - Major barriers to effective training include the necessity of visiting multiple centers for different treatments, insufficient brachytherapy activities at their home institutions, and competing hospital responsibilities, highlighting the need for improved structured training programs.
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  • * The patient experienced worsening symptoms like hyperleukocytosis and hepatosplenomegaly, and after treatment, he developed spinal cord issues confirmed by MRI and biopsy indicating EMH without acute myeloid leukemia.
  • * The patient underwent radiation therapy targeting the spine, which resulted in a successful recovery of motor and sensory functions, demonstrating the effectiveness of radiotherapy for treating EMH-related spinal compression.
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  • The study aimed to assess the occurrence of the abscopal response (AR) in metastatic melanoma patients undergoing palliative radiotherapy, focusing on those receiving specific conditions of systemic treatments.
  • Out of 118 patients analyzed, 15 (12.7%) exhibited an AR, showing significantly improved overall survival and progression-free survival compared to those without an AR.
  • The findings suggest that AR is a rare but important indicator of better prognosis and may be enhanced by concurrent treatments like immunotherapy and infections during radiotherapy.
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Background: COVID-19 pandemic troubled hospital and university's organization. Previous study showed oncology resident's formation has been impacted by pandemic. One year later, we aimed to evaluate the state of oncology resident's formation.

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Since the establishment of the reform of medical studies' third cycle in 2017, the first two residency semesters define the "phase socle" whose objective is to provide the basic knowledge of the specialty. We have carried out a declarative survey, submitted in 2020 to all French residents in Oncology whose "phase socle" had taken place during the first 3 years of the reform. The main objectives of this survey were to evaluate the theoretical teaching of oncology as well as the practical hospital training provided during this phase.

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  • * Because the prognosis for these patients can be poor without radiotherapy, it should be avoided unless absolutely necessary, and when required, should be tailored to reduce the chance of additional malignancies.
  • * Multidisciplinary teams should evaluate the specific risks associated with germline TP53 variants and overall patient prognosis, promoting the use of methods like proton therapy and non-ionizing imaging to minimize genotoxic effects.
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  • The Association for education and research of interns in oncology (AERIO) conducted a survey of oncology residents to understand their motivations and challenges during their first year of residency in 2020.
  • A questionnaire with 45 questions addressed demographics, clinical expectations, training goals, and participation in professional associations, with 66% participation from the residents.
  • Results showed most participants were young women with unclear specialty choices, long work hours, a strong interest in clinical research, and issues accessing training time.
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Purpose: Low-dose-rate brachytherapy is a key treatment for low-risk or favorable intermediate-risk prostate cancer. The number of radioactive seeds inserted during the procedure depends on prostate volume, and is not easy to predict without pre-planning. Consequently, a large number of unused seeds may be left after treatment.

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Prostate cancer is the most frequently diagnosed cancer in men and a leading cause of cancer-related death. In recent decades, the development of immunotherapies has resulted in great promise to cure metastatic disease. However, prostate cancer has failed to show any significant response, presumably due to its immunosuppressive microenvironment.

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Purpose: Low-dose-rate brachytherapy (BT) with permanent iodine-125 radioactive seeds is a highly effective treatment option for low- and favorable intermediate-risk prostate cancer. However, optimal implantation is not always achieved due to edema or seeds loss. One way to improve seed placement is the use of stranded seeds called "intraoperatively built custom-linked seeds (IBCLS)" in an opposition to loose seeds (LS).

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  • This study evaluated the use of 18F-fluorodeoxyglucose (18-FDG) PET/CT scans in the initial work-up for patients with head and neck squamous cell carcinoma (HNSCC) to assess its impact on treatment decisions and patient prognosis.
  • A total of 477 patients were analyzed, with the findings showing that incorporating PET/CT changed the management of 46.3% of patients, and for 19.5% of them, the impact was significant enough to alter treatment methods.
  • The research indicated that patients who were reclassified from early-stage to advanced stage using PET/CT had a notably lower three-year overall survival rate, highlighting the importance of accurate staging in influencing treatment
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Caloric starvation, as well as various diets, has been proposed to increase the oxidative DNA damage induced by radiotherapy (RT). However, some diets could have dual effects, sometimes promoting cancer growth, whereas proposing caloric restriction may appear counterproductive during RT considering that the maintenance of weight is a major factor for the success of this therapy. A systematic review was performed via a PubMed search on RT and fasting, or caloric restriction, ketogenic diet (>75% of fat-derived energy intake), protein starvation, amino acid restriction, as well as the Warburg effect.

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  • * Researchers looked at 13 patients who had tissue expanders implanted and found that the majority had anal neoplasms; however, the procedure delayed the start of treatment and introduced complications in some cases.
  • * It concludes that while tissue expanders can help in cases where IMRT might not meet dosimetric requirements, the procedure can complicate overall patient care and treatment timelines.
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  • * The text reports a case of a 50-year-old woman with mCRC who achieved a complete metabolic response after treatment with FOLFIRI-aflibercept, assessed via FDG PET/CT.
  • * This case highlights the potential of FDG PET/CT as an effective tool for evaluating the effectiveness of targeted therapies in mCRC.
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During the follow-up of a woman treated by radiotherapy for an in situ carcinoma of her left breast, radio-induced skin lesions were diagnosed. They appeared not to be simple radiodermatitis but radio-induced Sweet syndrome. Discussions were led on the benefit of completing the last session of radiotherapy for such a low-grade malignancy while considering the risk of complication from radio-induced disease.

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  • Schwannoma can cause false-positive results in 18F-FDG PET/CT scans, which may lead to incorrect cancer staging and affect patient treatment decisions.
  • A case study discusses a patient who had an 18F-FDG PET/CT scan for ovarian adenocarcinoma, which showed a concerning hypermetabolic mass in the mediastinum.
  • After biopsy, it was determined that the mass was a Schwannoma, clearing the patient for surgery on her ovarian adenocarcinoma by ruling out malignancy from the mass.
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Introduction: The aim of this study was to analyze the impact of inhomogeneous versus homogeneous dose distribution on local control (LC) and radionecrosis (RN) in patients treated with fractionated stereotactic radiotherapy (SRT) for newly-diagnosed brain metastases (BM).

Patients And Methods: From 2014 to 2017, 134 patients (median age 61 years) underwent SRT for BM (n = 114 with ≤2, n = 20 with 3-6 BM) at our institution. Treatment was delivered using volumetric modulated arc therapy on a linear accelerator.

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