Publications by authors named "Vinh-Hung V"

Over the years, radiotherapy has seen continual improvements and has become a standard treatment for most malignant tumors. Cardiotoxicity is a well-known radiotherapy side effect, leading to the risk of long-term morbidity and mortality in cancer survivors. Therefore, minimizing radiotherapy-related cardiotoxicity remains an important challenge in cancer care management.

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The standard of care for locally advanced non-small-cell lung cancer (NSCLC) is either surgery combined with chemotherapy pre- or postoperatively or concurrent chemotherapy and radiotherapy. However, older and frail patients may not be candidates for surgery and chemotherapy due to the high mortality risk and are frequently referred to radiotherapy alone, which is better tolerated but carries a high risk of disease recurrence. Recently, immunotherapy with immune checkpoint inhibitors (ICIs) may induce a high response rate among cancer patients with positive programmed death ligand 1 (PD-L1) expression.

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The standard of care for non-metastatic muscle invasive bladder cancer is either radical cystectomy or bladder preservation therapy, which consists of maximal transurethral bladder resection of the tumor followed by concurrent chemoradiation with a cisplatin-based regimen. However, for older cancer patients who are too frail for surgical resection or have decreased renal function, radiotherapy alone may offer palliation. Recently, immunotherapy with immune checkpoint inhibitors (ICI) has emerged as a promising treatment when combined with radiotherapy due to the synergy of those two modalities.

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Article Synopsis
  • The study explores the use of dose and volume metrics in radiotherapy planning, specifically for breast cancer patients undergoing hypofractionation and integrated boost treatments.
  • It analyzes dosimetry data from 42 patients, focusing on the heart, lungs, and contralateral breast, to identify which metrics are most representative.
  • The findings suggest that basic statistics like mean, standard deviation, and median doses effectively correlate with each other, indicating a simpler approach to metric selection may be sufficient for evaluating organ doses in radiotherapy.
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The standard of care for non-metastatic renal cancer is surgical resection followed by adjuvant therapy for those at high risk for recurrences. However, for older patients, surgery may not be an option due to the high risk of complications which may result in death. In the past renal cancer was considered to be radio-resistant, and required a higher dose of radiation leading to excessive complications secondary to damage of the normal organs surrounding the cancer.

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Background/aim: The lymph node ratio (LNR) indicates the number of involved lymph nodes divided by the number of lymph nodes found during axillary exploration. This study investigated the prognostic value of the LNR in de novo metastatic breast cancer (dnMBC). We hypothesized that LNR might predict long-term survival even in cases where the disease has already disseminated beyond the regional stage.

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The standard of care for locally advanced rectal cancer is total neoadjuvant therapy followed by surgical resection. Current evidence suggests that selected patients may be able to delay or avoid surgery without affecting survival rates if they achieve a complete clinical response (CCR). However, for older cancer patients who are too frail for surgery or decline the surgical procedure, local recurrence may lead to a deterioration of patient quality of life.

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Article Synopsis
  • The impact of low-dose apalutamide on nonmetastatic castration-resistant prostate cancer is still unclear.
  • An 80-year-old patient received only 25% of the recommended dose and, despite interruptions due to COVID lockdowns, lived for three years without signs of metastasis.
  • This case suggests that low-dose apalutamide may be worth considering for elderly patients with this condition.
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Background: TomoBreast hypothesized that hypofractionated 15 fractions/3 weeks image-guided radiation therapy (H-IGRT) can reduce lung-heart toxicity, as compared with normofractionated 25-33 fractions/5-7 weeks conventional radiation therapy (CRT).

Methods: In a single center 123 women with stage I-II operated breast cancer were randomized to receive CRT (N=64) or H-IGRT (N=59). The primary endpoint used a composite four-items measure of the time to 10% alteration in any of patient-reported outcomes, physician clinical evaluation, echocardiography or lung function tests, analyzed by intention-to-treat.

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Cutaneous skin carcinoma is a disease of older patients. The prevalence of cutaneous squamous-cell carcinoma (cSCC) increases with age. The head and neck region is a frequent place of occurrence due to exposure to ultraviolet light.

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Background: The standard treatment for locally advanced cervical cancer involves chemo-radiation followed by brachytherapy. However, some patients are unable to undergo brachytherapy intensification. Recent advancements in radiation technology have provided several techniques, with stereotactic body radiation therapy (SBRT) theoretically able to mimic the dose distribution of brachytherapy with a high dose gradient.

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Older cancer patients are disproportionally affected by the Coronavirus 19 (COVID-19) pandemic. A higher rate of death among the elderly and the potential for long-term disability have led to fear of contracting the virus in these patients. This fear can, paradoxically, cause delay in diagnosis and treatment that may lead to a poor outcome that could have been prevented.

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The standard of care for metastatic disease is systemic therapy. A unique subset of patients with limited metastatic disease defined as distant involvement of five anatomic sites or less (oligometastases) have a better chance of remission or improved survival and may benefit from local treatments such as surgery or stereotactic body radiotherapy (SBRT). However, to prevent further spread of disease, systemic treatment such as chemotherapy, targeted therapy, and hormonal therapy may be required.

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Article Synopsis
  • The study involved 123 women with early-stage breast cancer to assess lung-heart toxicity and mortality, particularly during the COVID-19 pandemic.
  • At a median follow-up of 12 years, the overall survival rate was 87.8%, but 2020 saw a significant increase in non-cancer-related deaths, contributing to a noticeable decline in lung-heart function.
  • Findings indicated that lung-heart health deteriorated notably in 2020, as evidenced by declines in freedom from adverse events (fAE) and key pulmonary function measures.
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The standard of care for locally advanced head and neck cancer is concurrent chemoradiation or postoperative irradiation with or without chemotherapy. Surgery may not be an option for older patients (70 years old or above) due to multiple co-morbidities and frailty. Additionally, the standard chemotherapy of cisplatin may not be ideal for those patients due to oto- and nephrotoxicity.

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Article Synopsis
  • The standard treatment for locally advanced non-small cell lung cancer (NSCLC) often involves surgery and chemotherapy, but older patients with health issues may struggle with these options due to their side effects.
  • A literature review highlighted the potential of immunotherapy using checkpoint inhibitors (CPI) and image-guided radiotherapy (IGRT) as safer alternatives for older patients, especially those with high PD-L1 expression.
  • Reduced doses of CPI (RDCPI) could be equally effective and more affordable, while IGRT may help limit complications by protecting surrounding healthy tissue, warranting further research in future studies.
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  • The study analyzes breast cancer survival in women from Martinique between 2008-2017, focusing on various prognostic factors such as demographics, cancer stage, and hormone receptor status.
  • A total of 1,708 patients were included, revealing a median age of 57 years, with 20.9% diagnosed with triple-negative breast cancer (TNBC) and one-year overall survival (OS) rates of 95.2%, dropping to 80.1% at five years.
  • The findings highlight that metastatic disease, TNBC, HR+/HER2- status, and age over 75 significantly increase the risk of death, marking it as a crucial study for understanding breast cancer outcomes in this region.
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  • Enzalutamide is a key drug for metastatic prostate cancer, but standard doses often lead to side effects requiring reductions; this study examined the effects of starting with a lower dose (≤50%) on patient outcomes.
  • Researchers analyzed records from 111 patients and compared low-dose (≤80 mg/day) to standard-dose (160 mg/day) enzalutamide regarding survival outcomes (overall and progression-free survival).
  • Results showed no significant difference in overall or progression-free survival between the doses, but low-dose patients had a better longevity, reflected in a longer average attained age (89.1 years) compared to those on the standard dose (83.8 years).
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Image-guided adaptive brachytherapy (IGABT) is part of the standard of care for locally advanced cervical cancer (LACC). Access to IGABT is limited in many regions, thus leading to treatment care disparities. We report the experience of a referral network for women with LACC between radiotherapy facilities in Overseas France and Gustave Roussy.

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Article Synopsis
  • The study investigates the long-term prognostic value of preoperative F-FDG PET scans for predicting overall survival (OS) in breast cancer patients over a 15-year period.
  • It found that PET-positive results, particularly in axillary and sternal regions, were associated with poor OS and disease-free survival, with specific hazard ratios indicating increased mortality risk.
  • The research highlights the SUVmax as a significant predictor of OS, suggesting that higher uptake values in the breast and axilla correlate with greater risks of death, emphasizing the importance of PET scan results in breast cancer prognosis.*
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Purpose: Previous studies in patients with breast cancer have shown acute radiation therapy-induced reductions of pulmonary diffusing capacity, essentially owing to lung volume restriction. We aimed to assess the long-term effect of 2 radiation therapy regimens, which differed in terms of radiation technique and dose fractionation, on lung function.

Methods And Materials: From a randomized controlled trial comparing conventional 3-dimensional conformal radiation therapy (CR) and hypofractionated tomotherapy (TT), 84 patients with breast cancer (age at inclusion 54 ± 10 [standard deviation] years) could be assessed at baseline, after 3 months, and after 1, 2, 3, and 10 years.

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Gini's mean difference (GMD, mean absolute difference between any two distinct quantities) of the restricted mean survival times (RMSTs, expectation of life at a given time limit) has been proposed as a new metric where higher GMD indicates better prognostic value. GMD is applied to the RMSTs at 25 years time-horizon to evaluate the long-term overall survival of women with breast cancer who received neoadjuvant chemotherapy, comparing a classification based on the number (pN) versus a classification based on the ratio (LNRc) of positive nodes found at axillary surgery. A total of 233 patients treated in 1980-2009 with documented number of positive nodes (npos) and number of nodes examined (ntot) were identified.

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Prone setup has been advocated to improve organ sparing in whole breast radiotherapy without impairing breast coverage. We evaluate the dosimetric advantage of prone setup for the right breast and look for predictors of the gain. Right breast cancer patients treated in 2010-2013 who had a dual supine and prone planning were retrospectively identified.

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Article Synopsis
  • - The study aimed to compare long-term patient-reported outcomes (PRO) between conventional radiotherapy (CR) and tomotherapy (TT) in breast cancer treatment, focusing on potential reductions in lung and heart toxicity from TT.
  • - 123 women participated, with 64 receiving CR and 59 receiving TT; treatment involved specific radiation dosages and delivery methods, and PRO were measured using a validated questionnaire.
  • - After a median follow-up of 10.4 years, participants reported PROs that indicated some deterioration over time, particularly in fatigue levels; however, there were no significant differences in outcomes between the two treatment arms.
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