Publications by authors named "Alexander Tuan Falk"

Introduction: Hepatocholangiocarcinoma (HCC-ICC) is a rare tumor presenting the histologic characteristics of both hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC). As there is no consensus on it management, the therapeutic strategy rests on the specific treatments for HCC or ICC. Programmed cell death 1 (PD-1) inhibitors showed encouraging results in the second line treatment of HCC after sorafenib but it efficacy in HCC-ICC has never been reported.

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Glioblastoma is one of the most common types of primary brain tumor. In situations of local recurrence, physicians can suggest either specific palliative anticancer treatments (SPAT; surgery, chemotherapy, radiotherapy) or best supportive care (BSC). The objective of the present study was to identify clinical factors that may have influenced the continuation or cessation of SPAT during the final 3 months of life in patients with glioblastoma.

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Background: Because of the rarity of the condition, studies concerning the management of patients with squamous cell carcinoma of the anus with distant metastasis are scarce. The available studies indicate poor outcomes with exclusive chemotherapy.

Objective: Our aim was to evaluate the impact of multidisciplinary treatment on overall survival among patients presenting with metastatic squamous cell carcinoma of the anus.

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Article Synopsis
  • * Cancer stem cells (CSCs) contribute to radio-resistance, particularly in glioblastoma, and their proximity to radiation can significantly impact patient survival outcomes.
  • * Damage to healthy tissue stem cells during radiotherapy leads to severe side effects, such as memory issues and dry mouth, suggesting that understanding stem cell dynamics can improve treatment efficacy and reduce toxicity.
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Fertility is a major part of the global care of patients treated for cancer. A new discipline known as oncofertility has emerged in some countries. Although the relationship between chemotherapy and external radiotherapy and fertility has been studied and reported, there is only scarce data available on brachytherapy.

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Introduction: The score of the MASCC, by means of clinical criteria, estimates the risk of serious complications in patients with neutropenic fever induced by chemotherapy.

Methods: We retrospectively studied a cohort of patients hospitalized for a neutropenic fever and analyzed complications according to the criteria defined by the MASCC.

Results: Eighty-one neutropenic fevers in 71 patients were identified.

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Objectives: Glioblastoma is one of the most frequent primitive brain tumors. Patients who experience tumor relapse after surgery and concomitant radiochemotherapy have a dismal prognosis. The objective of this study is to analyze efficacy data in terms of overall survival (OS) and progression- free survival (PFS) following combination therapy with bevacizumab (BVZ) and irinotecan among patients with relapsed glioblastoma.

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Purpose: There is no consensus for parametrial boost technic while both transvaginal and transperineal approaches are discussed. A prototype was developed consisting of a perineal template, allowing transperineal needle insertion. This study analyzed acute toxicity of concomitant cervical and transperineal parametrial high-dose-rate brachytherapy (HDRB) boost for locally advanced cervical cancer.

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Purpose: To review current evidence of the role of proton therapy (PT) in other tumors than skull base, sinusal/parasinusal, spinal and pediatric tumors; to determine medico-economic aspects raised by PT.

Material And Methods: A systematic review on Medline was performed with the following keywords: proton therapy, proton beam, protontherapy, cancer; publications with comparison between PT and photon-therapy were also selected.

Results: In silico studies have shown superiority (better dose delivery to the target and/or to organs at risk) of PT toward photon-therapy in most of thoracic and abdominal malignant tumors.

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Background: We studied the efficacy and safety of cabazitaxel in unselected real-life patients.

Patients And Methods: We retrospectively investigated all patients with metastatic prostate cancer (mPC) treated with cabazitaxel 25 mg/m2 i.v.

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Background: The elderly population in Western countries is growing and constitutes a public health issue. Concomitantly, age-related diseases such as cancer increase. There are few data on the efficacy, tolerability and toxicity of specific anticancer therapy in the very elderly patients; therefore, their management is not standardized.

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Objective: Several studies have demonstrated that daily physical activity (PA) prevents the development of breast cancer. Our objective was to examine the relationship between PA and clinical and biological tumor characteristics in breast cancer patients in order to determine the impact of energy expenditure (EE) on tumor prognosis.

Methods: We pooled data from two prospective studies, including a total of 121 breast cancer patients.

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Purpose: Currently, there are no recommendations for the management of a second local recurrence of prostate adenocarcinoma except for the introduction of androgen deprivation therapy (ADT).

Case Report: A 69-year-old man underwent a third salvage local treatment with high-dose-rate brachytherapy (HDRB), for a second biochemical relapse for local recurrence. Thirty-five Grays in 5 fractions were delivered on the whole prostate extended to the proximal part of left seminal vesicle.

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We report the case of an 80-year-old patient who presented with a progressive prostate metastatic cancer with poor performance status. The patient had already benefitted from docetaxel and abiraterone. A new line of chemotherapy by cabazitaxel was started with good response, and there was a dramatic improvement in general status and pain symptoms.

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Pulsed-dose-rate (PDR) brachytherapy is a recent brachytherapy modality combining the radiobiological advantages of low-dose-rate (LDR) brachytherapy with increased possibilities of dose optimization and radiation safety. However, treatment duration remains protracted, as the prescribed dose is typically delivered through pulses that do not exceed 0.5 Gy/h for critical organs.

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Purpose: The mainstay of first line treatment in metastatic sarcomas is chemotherapy with response rates of ≈25% but the optimal management of further events is debated. We assessed the benefit of local metastatic treatment in metastatic sarcomas.

Results: Local control of local treatment strategies (≈85%) is excellent but highly institution-dependent and subject to selection biases.

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The number of nonagenarian people in the world is steadily growing. This phenomenon will increase in future years: in 2050, world population prospects estimate 71.16 million people aged 90 years or older.

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The aim of the study was to analyze the medical and economic interest of OSNA molecular technique, compared to conventional postoperative histopathologic evaluation for sentinel lymph node exploration in breast cancer patients. This retrospective cost-benefit study was conducted in the French Universitary Hospital of Saint Etienne on patients who received sentinel lymph node exploration between July 1, 2007 and December 31, 2009. Lymph nodes were analyzed by conventional postoperative histological evaluation in group 1 (82 patients) and OSNA in group 2 (86 patients).

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Aim: To assess clinical outcomes of patients treated with a high-dose rate brachytherapy boost for anal canal cancer (ACC).

Methods: From August 2005 to February 2013, 28 patients presenting an ACC treated by split-course external beam radiotherapy (EBRT) and HDR brachytherapy with or without chemotherapy in a French regional cancer center in Nice were retrospectively analyzed.

Results: Median age was 60.

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Background: Invasive fungal infections (IFIs) remain one of the worrying complications in patients with acute myeloid leukemia (AML) due to their incidence and high level of attributable mortality. In light of these risks, antifungal prophylaxis has always been debated. We conducted a single-center retrospective study of two prophylactic antifungal agents (fluconazole/posaconazole) in 91 consecutive patients receiving induction chemotherapy for AML between 2005 and 2009, in order to evaluate the impact on the incidence of IFI and on the mycological flora of the patients.

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Purpose: To assess clinical outcomes of high-dose rate interstitial brachytherapy (HIB) in localized penile carcinoma.

Material And Methods: From 03/2006 to 08/2013, patients with biopsy-proven T1-T2 (<4 cm) non-metastatic localized penile squamous cell carcinoma underwent HIB. Under general anaesthesia, after Foley catheter placement, needles were placed in the target volume using a dedicated template.

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Radiotherapy for epithelioid hemangioendothelioma (EHE) using volumetric intensity-modulated arc radiotherapy (VMAT). A 48-year-old woman was referred for curative irradiation of a vertebral EHE after failure of surgery. A comparison between VMAT and conventional conformal tridimensional (3D) dosimetry was performed and potential advantage of VMAT for sparing critical organs from irradiation's side effects was discussed.

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In the field of radiotherapy, there is very little scientific data on the management of nonagenarians, especially in patients aged 90 years or more and with head and neck cancer (HNC). We made one of the first retrospective study of the feasibility and safety of radiotherapy in this population with HNC. Records of radiotherapy coming from four health facilities were studied to include all nonagenarian patients with HNC in the last 10 years and who received radiation therapy.

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Background: There are only scarce data on the management of patients aged 90years or older with cancer, and more particularly on the place of radiation therapy (RT). We report the first large study on patients (pts) aged 90years or older receiving RT.

Methods And Materials: Records from RT departments from five institutions were reviewed to identify pts 90years of age and older who underwent RT for various malignant tumours treated between 2003 and 2012.

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