270 results match your criteria: "Princess Margaret Cancer Centre - University Health Network[Affiliation]"

A Matched Analysis of Active Surveillance Versus Nephrectomy for T1a Small Renal Masses.

Eur Urol Oncol

October 2023

Division of Urology, Department of Surgery, University of Toronto, Toronto, Canada; Division of Urology, Department of Surgical Oncology, Princess Margaret Cancer Centre-University Health Network, Toronto, Canada. Electronic address:

While patients with a small renal mass (SRM) on active surveillance (AS) experience excellent metastasis-free survival (MFS) and cancer-specific survival (CSS), differences in overall survival (OS) observed may be explained by selection of older/comorbid patients for AS. Few studies have evaluated AS versus primary intervention in clinically balanced groups. We identified patients aged 55-75 yr with an SRM (≤4 cm, T1a) in our institutional database (2000-2020).

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Importance: Patients with cancer are known to have increased risk of COVID-19 complications, including death.

Objective: To determine the association of COVID-19 vaccination with breakthrough infections and complications in patients with cancer compared to noncancer controls.

Design, Setting, And Participants: Retrospective population-based cohort study using linked administrative databases in Ontario, Canada, in residents 18 years and older who received COVID-19 vaccination.

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Objectives: To evaluate the outcomes of advanced-stage laryngeal squamous cell carcinoma (SCC) patients treated with functional-preservation strategy with a specific focus on laryngo-esophageal dysfunction disease-free survival (LEDDFS).

Methods And Materials: A retrospective review was conducted of stage III-IVB laryngeal SCC patients who were treated with curative-intent radiotherapy (RT) (2007-2018). Patients were preferentially managed with upfront chemoradiation (CCRT); except for those with cN2-3, cT4, or large volume cT3 (induction chemotherapy followed by RT or CCRT is an option), and those who were unfit or declined chemotherapy (received altered RT).

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Importance: The association of primary tumor volume with outcomes in T3 glottic cancers treated with radiotherapy with concurrent chemotherapy remains unclear, with some evidence suggesting worse locoregional control in larger tumors.

Objective: To evaluate the association of primary tumor volume with oncologic outcomes in patients with T3 N0-N3 M0 glottic cancer treated with primary (chemo)radiotherapy in a large multi-institutional study.

Design, Setting, And Participants: This multi-institutional retrospective cohort study involved 7 Canadian cancer centers from 2002 to 2018.

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Background: For patients with anti-N-methyl-D-aspartate receptor encephalitis (NMDARE) and ovarian teratoma, "conservative" surgical approaches (complete or partial unilateral oophorectomy or bilateral partial oophorectomies) are associated with clinical improvement. "Aggressive" ovarian resections (complete bilateral oophorectomy or "blind" ovarian resections without pre-operative evidence of teratoma) are also reported, although the evidence supporting these approaches is unclear.

Objective: To compare the one-year functional outcomes of patients with NMDARE who underwent conservative vs.

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Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare and aggressive hematologic malignancy. It is associated with poor prognosis and heterogenous presentation. The CD123-directed cytotoxin, Tagraxofusp, is a targeted therapy for BPDCN.

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The safety profile of the novel oral JAK2/IRAK1 inhibitor pacritinib in patients with cytopenic myelofibrosis was described in the Phase 2 PAC203 and Phase 3 PERSIST-2 studies. To account for longer treatment durations on the pacritinib arms compared to best available therapy (BAT), we present a risk-adjusted safety analysis of event rates accounting for different time on treatment. While the rate of overall events was higher on pacritinib compared to BAT, the rate of fatal events was lower, and there was no excess in bleeding, cardiac events, secondary malignancy, or thrombosis on pacritinib, including in patients with severe thrombocytopenia.

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Acceptability of bariatric surgery in people with endometrial cancer and atypical hyperplasia: A qualitative study.

Gynecol Oncol

February 2023

Division of Gynecologic Oncology, Princess Margaret Cancer Centre/University Health Network/Sinai Health Systems, Toronto, Ontario, Canada; Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada.

Objective: In young individuals with obesity, infertility, and endometrial cancer, significant, sustained weight loss through bariatric surgery may result in a durable oncologic and reproductive response. However, it is not known whether bariatric surgery is acceptable to this patient population. We performed a qualitative study to understand the acceptability of bariatric surgery in young individuals with obesity and endometrial cancer or atypical hyperplasia.

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Association of Household Income at Diagnosis With Financial Toxicity, Health Utility, and Survival in Patients With Head and Neck Cancer.

JAMA Otolaryngol Head Neck Surg

January 2023

Department of Otolaryngology-Head and Neck Surgery/Surgical Oncology, Princess Margaret Cancer Centre-University Health Network, University of Toronto, Toronto, Ontario, Canada.

Importance: While several studies have documented a link between socioeconomic status and survival in head and neck cancer, nearly all have used ecologic, community-based measures. Studies using more granular patient-level data are lacking.

Objective: To determine the association of baseline annual household income with financial toxicity, health utility, and survival.

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Background: Continued smoking after a diagnosis of cancer negatively impacts cancer outcomes, but the impact of tobacco on newer treatments options is not well established. Collecting and evaluating tobacco use in clinical trials may advance understanding of the consequences of tobacco use on treatment modalities, but little is known about the frequency of reporting and analysis of tobacco use in cancer cooperative clinical trial groups.

Patients And Methods: A comprehensive literature search was conducted to identify cancer cooperative group clinical trials published from January 2017-October 2019.

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Background: In many jurisdictions, cancer patients were prioritized for COVID-19 vaccination because of increased risk of infection and death. To understand sociodemographic disparities that affected timely receipt of COVID-19 vaccination among cancer patients, we undertook a population-based study in Ontario, Canada.

Methods: Patients older than 18 years and diagnosed with cancer January 2010 to September 2020 were identified using administrative data; vaccination administration was captured between approval (December 2020) up to February 2022.

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Optic Nerve Sheath Meningioma Presenting as a Slow-Growing Intraocular Mass.

J Neuroophthalmol

March 2024

Ocular Oncology Service (LL, WD, HK, FA), Department of Ophthalmology and Visual Sciences, Princess Margaret Cancer Centre/University Health Network, University of Toronto, Toronto, Canada; Departments of Laboratory Medicine (DGM) and Ophthalmology, Retina Service (FA), St. Michael's Hospital, University of Toronto, Toronto, Canada.

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Purpose: Evidence supports the role of prescribed exercise for cancer survivors, yet few are advised to exercise by a healthcare practitioner (HCP). We sought to investigate the gap between HCPs' knowledge and practice from an international perspective.

Methods: An online questionnaire was administered to HCPs working in cancer care between February 2020 and February 2021.

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Purpose: Tumor-infiltrating lymphocytes (TIL) are immune cell populations found within tumors, critical in the antigen-specific host immune response. In this study, we aimed to elucidate the prognostic significance of CD3+, CD4+, and CD8+ TILs in nasopharyngeal cancer (NPC).

Experimental Design: Immune cell infiltration was quantified in NPC samples (n = 50) using RNA-sequencing (RNA-seq) data based on rearranged T-cell receptor (TCR) reads and the Estimation of Stromal and Immune cells in malignant tumors using expression data (ESTIMATE) immune score tool.

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The MEMORY Study: MulticentEr study of Minimally invasive surgery versus Open Radical hYsterectomy in the management of early-stage cervical cancer: Survival outcomes.

Gynecol Oncol

September 2022

Gynecology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, NY, NY, United States of America; Department of Obstetrics and Gynecology, Weill Cornell Medical College, NY, NY, United States of America.

Objective: The Laparoscopic Approach to Cervical Cancer (LACC) trial found that minimally invasive radical hysterectomy compared to open radical hysterectomy compromised oncologic outcomes and was associated with worse progression-free survival (PFS) and overall survival (OS) in early-stage cervical carcinoma. We sought to assess oncologic outcomes at multiple centers between minimally invasive (MIS) radical hysterectomy and OPEN radical hysterectomy.

Methods: This is a multi-institutional, retrospective cohort study of patients with 2009 FIGO stage IA1 (with lymphovascular space invasion) to IB1 cervical carcinoma from 1/2007-12/2016.

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Objective: There is limited research examining how change in cancer-related fatigue (CRF) over time predicts change in health-related quality of life (HRQOL), and no studies have examined this relationship in ovarian cancer patients, specifically. The purpose of this study was to explore the prevalence and trajectory of CRF over time and examine how change in CRF over time predicts change in HRQOL in ovarian cancer patients.

Methods: Ovarian cancer patients (N = 202) were recruited from Princess Margaret Cancer Centre in Toronto, Canada.

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Background: Patients with cancer often experience multiple symptoms concurrently. We identified patient clusters based on longitudinal symptom severity trajectories in oropharyngeal cancer (OPC) and evaluated the potential clinical utility of this approach.

Methods: A retrospective OPC patient cluster analysis using 6 months of symptom severity data from radiotherapy initiation.

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Sarcoma can present as locally advanced disease involving pleura for which extra-pleural pneumonectomy (EPP) may be the only surgical option to ensure adequate local control. Data were collected on patients who underwent EPP between January 2009 and August 2021 at Princess Margret Hospital and SickKids (Toronto) using the CanSaRCC (Canadian Sarcoma Research and Clinical Collaboration). Ten patients with locally advanced sarcoma involving the pleura, aged 4 to 59 years (median 19.

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Intratumoral heterogeneity (ITH) provides the substrate for tumor evolution and treatment resistance, yet is remarkably understudied in lymphoma, due to the often limited amount of tissue that gets sampled during the routine diagnostic process, generally from a single nodal or extranodal site. Furthermore, the trajectory of how lymphoma, and especially non-Hodgkin lymphoma, spreads throughout the human body remains poorly understood. Here, we present a detailed characterization of ITH by applying whole-genome sequencing to spatially separated tumor samples harvested at the time of autopsy (n=24) and/or diagnosis (n=3) in three patients presenting with refractory B-cell non-Hodgkin lymphoma.

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Toward Better Understanding and Management of Solitary Fibrous Tumor.

Surg Oncol Clin N Am

July 2022

Department of Surgery, University of Toronto, Toronto, Canada; Department of Surgical Oncology, Princess Margaret Cancer Centre/Mount Sinai Hospital, Toronto, Canada. Electronic address:

Solitary fibrous tumor (SFT) comprises a histologic spectrum of soft tissue neoplasms that are characterized by the unique NAB2-STAT6 gene fusion. Changes in diagnostic terminology and site-specific classification over the past few decades have resulted in a disjointed literature. Complete surgical excision with preservation of function remains the mainstay of treatment.

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Pretreatment classification tools are used in prostate cancer to inform patient management. The effect of cribriform pattern 4 (CC) and intraductal carcinoma (IDC) on such nomograms is still underexplored. We analyzed the Cancer of Prostate Risk Assessment (CAPRA) and National Comprehensive Cancer Network (NCCN) risk scores in cases with and without CC/IDC to assess impact on biochemical recurrence (BCR) and metastases/death of prostate cancer (event free survival-EFS) after prostatectomy.

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Background: Germline variants explain more than a third of prostate cancer (PrCa) risk, but very few associations have been identified between heritable factors and clinical progression.

Objective: To find rare germline variants that predict time to biochemical recurrence (BCR) after radical treatment in men with PrCa and understand the genetic factors associated with such progression.

Design, Setting, And Participants: Whole-genome sequencing data from blood DNA were analysed for 850 PrCa patients with radical treatment from the Pan Prostate Cancer Group (PPCG) consortium from the UK, Canada, Germany, Australia, and France.

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Objectives: To assess the effects of the implementation of a standardized voiding protocol in patients undergoing minimally invasive hysterectomy at a single cancer center in terms of the urinary tract infection (UTI) rate, time to first void, and overnight stays secondary to urinary retention.

Methods: We enrolled 102 consecutive patients undergoing minimally invasive hysterectomy at a single cancer center during a 12-month period. A pre-intervention cohort of 100 consecutive patients was identified for comparison.

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