Rahul Krishnatry

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PURPOSE To uncover the genetic events leading to transformation of pediatric low-grade glioma (PLGG) to secondary high-grade glioma (sHGG). PATIENTS AND METHODS We retrospectively identified patients with sHGG from a population-based cohort of 886 patients with PLGG with long clinical follow-up. Exome sequencing and array CGH were performed on available(More)
OBJECTIVE To compare volumes and doses of tumour and organs at risk with computed tomography vs. magnetic resonance imaging in cervical cancer brachytherapy. METHODS Seventeen previously untreated patients with cervical cancer suitable for radical treatment were included. All patients underwent brachytherapy using a magnetic resonance imaging-compatible(More)
BACKGROUND Medulloblastoma has recently been found to consist of 4 molecularly and clinically distinct subgroups: WNT, Sonce hedgehog (SHH), Group 3, and Group 4. Deregulated microRNA expression is known to contribute to pathogenesis and has been shown to have diagnostic and prognostic potential in the classification of various cancers. METHODS Molecular(More)
Paediatric brain tumours arising in the thalamus present significant diagnostic and therapeutic challenges to physicians due to their sensitive midline location. As such, genetic analysis for biomarkers to aid in the diagnosis, prognosis and treatment of these tumours is needed. Here, we identified 64 thalamic gliomas with clinical follow-up and(More)
Seminoma is one of the most radio and chemo sensitive tumors. Aggressive variant of primary mediastinal seminoma (PMS) are rarely described in the literature. We here discuss an interesting case of young male (22 years) presenting with superior vena cava syndrome due to PMS that showed poor response to conventional platinum based chemotherapy and(More)
BACKGROUND The determinants of outcomes for adult survivors of pediatric low-grade glioma (PLGG) are largely unknown. METHODS This study collected population-based follow-up information for all PLGG patients diagnosed in Ontario, Canada from 1985 to 2012 (n = 1202) and determined factors affecting survival. The impact of upfront radiation treatment on(More)
Purpose BRAF V600E is a potentially highly targetable mutation detected in a subset of pediatric low-grade gliomas (PLGGs). Its biologic and clinical effect within this diverse group of tumors remains unknown. Patients and Methods A combined clinical and genetic institutional study of patients with PLGGs with long-term follow-up was performed (N = 510).(More)
OBJECTIVES To compare volumes and dose volume histogram (DVH) parameters for bone marrow contours using 2 methods on computed tomography (CT) and correlation with grade 2 or higher hematological toxicity (HT) in patients with cervical cancer treated with non-bone marrow-sparing intensity-modulated radiotherapy (IMRT) with concurrent cisplatin. MATERIALS(More)
OBJECTIVE This study investigates the correlation between dose-volume histogram derived from three bowel contouring methods and late toxicity in patients undergoing post-operative radiation therapy (PORT) for cervical cancer. METHODS From June 2010 to May 2013, 103 patients undergoing PORT were included. Three different contouring methods were used: (a)(More)
PURPOSE/INTRODUCTION To assess the variation in the doses received by the organs at risk (OARs) that can occur during treatment planning of cervical cancer by image-based brachytherapy. METHODS AND MATERIALS After intracavitary application, two sets of images-CT and MRI-were obtained. The two sets of images were fused together with respect to the(More)