Publications by authors named "Daya Sharma"

Background: The objective of this study was to evaluate the clinicopathological characteristics and patterns of care among women diagnosed with vulvar malignancy at a tertiary care teaching institute. Additionally, the study aimed to analyse the implications of revised FIGO staging system on stage shift and patient outcomes.

Methods: A retrospective observational study was conducted, wherein hospital records of biopsy-proven cases of vulvar cancers managed over a period of 10 years were comprehensively reviewed.

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Purpose: This consensus statement of Indian Brachytherapy Society (IBS) aims to generate practical and reproducible guidelines allowing for direct implementation in the Indian scenario.

Material And Methods: IBS board of directors appointed a panel of physicians with expertise in breast cancer and, in particular, breast brachytherapy, to develop a consensus statement. First, a literature review on breast brachytherapy was conducted, focusing on randomized trials, prospective studies, and multi-institutional series.

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Purpose: For cervical cancer patients, intra-cavitary brachytherapy (ICBT) is utilized with various dose-rate systems, such as low-dose-rate (LDR), high-dose-rate (HDR), and pulsed-dose-rate (PDR). This retrospective analysis aimed to compare the therapeutic outcomes of cervical cancer patients treated with either LDR-, HDR-, or PDR-ICBT.

Material And Methods: A total of 613 patients were treated with pelvic external beam radiation therapy (EBRT), followed by either LDR- (271 patients), HDR- (259 patients), or PDR- (83 patients) ICBT.

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  • * Myopia management aims to reduce severe forms of myopia and the sight-threatening complications associated with it, alongside tackling the dangers of ultraviolet radiation on eye health.
  • * There is a pressing need for public health policies that not only promote high lux light exposure but also ensure effective UV protection, particularly with advancements in protective eyewear design that balances light exposure and UV defense.
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  • The study examines the effectiveness of volumetric modulated arc therapy (VMAT) in delivering low-dose radiation therapy (LDRT) to the lungs of COVID-19 patients while minimizing the risk of long-term radiation-induced cancer (RIC).
  • By analyzing data from 10 patients previously treated for thoracic malignancies, the researchers compared the dosimetry of VMAT with a conventional radiation technique, finding that VMAT significantly lowered doses to organs at risk (OARs) and the bone marrow.
  • The results showed that VMAT not only improved dosimetry parameters but also reduced the estimated lifetime attributable risk of cancer, making it the preferred method for lung LDRT in COVID-19 patients requiring doses of 1
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Introduction: Surface mold brachytherapy (SMBT) is an established treatment modality in skin cancer, especially in accessible areas, and has shown comparable outcomes to surgery. We have presented our results for the skin tumor treatment with SMBT treated with high-dose-rate (HDR) brachytherapy in terms of clinical outcomes and toxicity at our institute.

Materials And Methods: In this retrospective analysis, 15 patients with skin cancer were treated with customized tube-based SMBT at our institute between January 2019 and July 2021.

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Thyroid carcinoma is the most common malignancy of the endocrine system and accounts for nearly 1.5% of all new cancer cases in India. The incidence of thyroid cancers is on the rise secondary to multiple factors including the widespread use of radiological imaging.

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  • The study projects that by 2040, around 161,000 patients in India will be eligible for particle therapy, indicating a growing demand for therapy facilities from 81-97 in 2020 to 121-146 by 2040.
  • Economic analysis shows that while capital costs for particle therapy are higher than conventional treatments, the treatment price per patient fraction could be significantly lower than that in higher-income countries, making it more accessible.
  • Despite challenges like resource limitations and the need for trained professionals, the research concludes that large-scale proton therapy is the most viable option, with a phased implementation strategy suggested to effectively tackle these barriers.
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Purpose: Interstitial brachytherapy (ISBT) is indicated for intact cervical carcinoma (IN-CC) if intracavitary brachytherapy (ICRT) is not feasible and also in vault carcinoma (VA-C). We aimed to evaluate the doses to pelvic lymph node regions in IN-CC and VA-C treated with ISBT.

Material And Methods: Ten patients (6 IN-CC, 4 VA-C) were chosen for this dosimetric study.

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  • There is a big problem with cervical cancer in poorer countries because they often don't have good screening and treatment options.
  • High-dose-rate (HDR) brachytherapy is a type of treatment that helps people survive and control the cancer better.
  • The American Brachytherapy Society and Indian Brachytherapy Society made a guide to help set up these treatment programs in places that lack resources.
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Introduction: Brachytherapy (BT) is integral in treatment of gynecological malignancies and is also an option for many other cancers. Data on training and proficiency levels of early career oncologists is limited. Like other continents a survey was conducted for early career oncologists in India.

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Purpose: Re-implantation of the tumor bearing autograft following extracorporeal radiation therapy (ECRT) has been established as an oncologically safe biological reconstruction technique following resection of bone sarcomas. However, factors affecting the ECRT graft-host bone incorporation have not been fully investigated. An insight into the factors that influence graft incorporation can circumvent the complications and increase graft survival.

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Background: Diagnostic delays in cancers are frequent in developing countries due to poor health infrastructure. Existing literature from developed countries suggests that diagnostic interval in bone sarcomas is primarily dictated by tumour biology with no impact on survival. This study evaluates the social and biological determinants of the diagnostic interval in bone sarcomas in a resource-challenged setting and assesses its impact on treatment outcomes.

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Introduction: Oligometastatic represents a distinctive subset of metastatic breast cancer (MBC). Incidence has been reported, in 1-5% of all newly diagnosed MBC. Literature is very sparse, especially from India.

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Importance: Carboplatin increases the pathological complete remission (pCR) rate in triple negative breast cancer (TNBC) when added to neoadjuvant chemotherapy, however, evidence on its effect on survival outcomes is controversial.

Methods: The study was prospectively registered at PROSPERO (CRD42021228386). We systematically searched PubMed, Embase, Cochrane Central Register of Clinical Trials, and conference proceedings from January 1, 2004 to January 30, 2022 for relevant randomized clinical trials (RCTs) of (neo)adjuvant chemotherapy in TNBC patients, with carboplatin in the intervention arm and standard anthracycline taxane (AT) in the control arm.

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Introduction: Prognostic scores in Ewing sarcoma including baseline clinical and laboratory characteristics are necessary for pre-treatment risk stratification. In this study, we formulated and validated a prognostic model for baseline risk categorization in Ewing sarcoma.

Materials And Methods: A retrospective single-institutional study was conducted on Ewing sarcoma patients treated uniformly between January 2003 and December 2018.

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Since the publication of the 2018 FIGO Cancer Report, giant strides have been made in the global effort to reduce the burden of cervical cancer, with the World Health Organization (WHO) rolling out a global strategy for cervical cancer elimination, aiming for implementation by 2030. In over 130 countries, including low- and middle-income countries, HPV vaccination is now included in the national program. Screening has seen major advances with wider implementation of HPV testing.

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  • The World Health Organization declared COVID-19 a pandemic in March 2020, with severe pneumonia being a major cause of death and no specific treatment available.
  • A pilot trial involving 10 patients with moderate to severe COVID-19 explored the feasibility and effectiveness of low dose radiation therapy (LDRT) to the lungs, using a dose of 70cGy.
  • Results showed that 9 out of 10 patients recovered fully within 3 to 7 days, while one patient with pre-existing conditions deteriorated and died; the study suggests LDRT's potential and calls for further research through randomized controlled trials.
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Primary surgical management is successful as the sole therapeutic modality in the majority of women with early-stage cervical, vaginal and vulvar cancer, but the presence of certain risk factors in the surgico-pathological specimen indicates a poorer prognosis. Adjuvant treatment can improve overall survival in such cases. Important risk factors in cervical cancer include intermediate-risk factors (large tumor size, deep cervical stromal invasion, lymph-vascular space invasion) and high-risk factors (positive or close margins, lymph nodes, or parametrial involvement).

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  • The COVID-19 pandemic, which began in Wuhan, China in December 2019, has resulted in significant mortality and morbidity globally, affecting over 200 countries.
  • Severe COVID-19 cases often trigger a harmful immune reaction called a cytokine storm, leading to serious complications like ARDS (Acute Respiratory Distress Syndrome).
  • Low-dose radiotherapy (LDRT) may help mitigate cytokine release syndrome by improving immune responses and has previously shown success in treating viral pneumonia, making it a potential option given the current lack of effective treatments for severe COVID-19 cases.
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Introduction: In a previous study, we demonstrated clinical and dosimetric feasibility of single partial arc volumetric modulated arc therapy (VMAT) for accelerated hypofractionated whole breast radiotherapy with simultaneous integrated boost (SIB) to lumpectomy cavity for early breast cancer. In this dosimetric study, we compared dual partial arcs versus single arc.

Patients And Methods: Fifteen consecutive patients for treatment with hypofractionated accelerated radiotherapy with SIB using VMAT were planned with single partial arc in an earlier study, initial result of which is published elsewhere.

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