Publications by authors named "Felix M Chinea"

Despite the increasing racial and ethnic diversity of the general US population, many, if not most, medical schools fall short of matriculating students reflective of this change in diversity. The Latinx community constitutes nearly 20% of the US population and is expected to rise substantially in the coming decades. Over the past 20 years, the number of Latinx students applying to and being admitted to medical school has grown but remains below 4% of the total medical student body composition.

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Purpose: A phase I clinical trial was designed to test the feasibility and toxicity of administering high-dose spatially fractionated radiation therapy to magnetic resonance imaging (MRI)-defined prostate tumor volumes, in addition to standard treatment.

Methods And Materials: We enrolled 25 men with favorable to high-risk prostate cancer and 1 to 3 suspicious multiparametric MRI (mpMRI) gross tumor volumes (GTVs). The mpMRI-GTVs were treated on day 1 with 12 to 14 Gy via dose cylinders using a lattice extreme ablative dose technique.

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Purpose: To examine the impact of ethnicity, Spanish language preference, socioeconomic status, and treatment setting on utilization of supportive services before radiotherapy (RT) among head and neck cancer patients and to determine whether a lack of these services is associated with an increased rate of adverse events.

Methods And Materials: Demographic, staging, and treatment details were retrospectively collected for patients treated at a safety-net hospital (n = 56) or adjacent private academic hospital (n = 183) from January 1, 2014, to June 30, 2016. Supportive care services evaluated were limited to speech/swallowing therapy and nutrition therapy.

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Background And Purpose: The aim of this study was to evaluate an automatic multi-atlas-based segmentation method for generating prostate, peripheral (PZ), and transition zone (TZ) contours on MRIs with and without fat saturation (±FS), and compare MRIs from different vendor MRI systems.

Methods: T2-weighted (T2) and fat-saturated (T2FS) MRIs were acquired on 3T GE (GE, Waukesha, WI, USA) and Siemens (Erlangen, Germany) systems. Manual prostate and PZ contours were used to create atlas libraries.

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Small randomized trials have not shown an overall survival (OS) difference among local treatment modalities for patients with extremity soft-tissue sarcomas (E-STS) but were underpowered for OS. We examine the impact of local treatment modalities on OS and sarcoma mortality (SM) using two national registries. The National Cancer Database (NCDB) and the Surveillance, Epidemiology, and End Results (SEER) Program were analyzed separately to identify patients with stage II-III, high-grade E-STS diagnosed between 2004 and 2013 and treated with (1) amputation alone, (2) limb-sparing surgery (LSS) alone, (3) preoperative radiation therapy (RT) and LSS, or (4) LSS and postoperative RT.

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Background: Non-Hispanic Black (NHB) men are at an increased risk for aggressive prostate cancer (PCa), making active surveillance (AS) potentially less optimal in this population. This concern has not been explored in other minority populations-specifically, Hispanic/Latino men. We recently found that Mexican-American men demonstrate an increased risk of PCa-specific mortality, and we hypothesized that they may also be at risk for an adverse outcome on AS.

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Purpose: To test the hypothesis that increased acute toxicity, measured using subdomains reflective of epithelial cell damage, will be associated with reduced late biochemical failure, as a surrogate for tumor radiosensitivity.

Methods And Materials: The study design was retrospective, with discovery and validation cohorts involving routinely collected data. Eligible patients had prostate cancer, underwent radiation therapy with curative intent, and had acute toxicity assessed prospectively.

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Objective To examine the impact of treatment setting and demographic factors on oropharyngeal and laryngeal cancer time to treatment initiation (TTI). Study Design Retrospective case series. Setting Safety net hospital and adjacent private academic hospital.

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Objective: To determine if recently found disparities in prostate cancer-specific mortality (PCSM) among Mexican and Puerto Rican men remained true in patients undergoing radical prostatectomy (RP), where the true grade and extent of cancer are known and can be accounted for.

Materials And Methods: Men diagnosed with localized-regional prostate cancer who had undergone RP as primary treatment were identified (N = 180,794). Patients were divided into the following racial and ethnic groups: non-Hispanic white (NHW) (n = 135,358), non-Hispanic black (NHB) (n = 21,882), Hispanic or Latino (n = 15,559), and Asian American or Pacific Islander (n = 7995).

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Purpose: To develop a robust and clinically applicable automated method for analyzing Dynamic Contrast Enhanced (DCE-) MRI of the prostate as a guide for targeted biopsies and treatments.

Materials And Methods: An unsupervised pattern recognition (PR) method was used to analyze prostate DCE-MRI from 71 sequential radiotherapy patients. Identified regions of interest (ROIs) with increased perfusion were assigned either to the peripheral (PZ) or transition zone (TZ).

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Background: Few studies focus on prostate cancer (PCa) outcomes in Hispanic/Latino men. Our study explores whether Hispanic/Latino subgroups demonstrate significantly different prostate cancer-specific mortality (PCSM) relative to Non-Hispanic White (NHW) and Non-Hispanic Black (NHB) men.

Methods: We extracted a population-based cohort of men diagnosed with local-regional PCa from 2000-2013 (n= 486,865).

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The purpose of this study was to investigate the correlation between image features extracted from PET images and the accuracy of manually drawn lesion contours in the lung. Such correlations are interesting in that they could potentially be used in predictive models to help guide physician contouring. In this work, 26 synthetic PET datasets were created using an anthropomorphic phantom and Monte Carlo simulation.

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Objectives: To address health disparities in risk stratification of U.S. Hispanic/Latino men by characterizing influences of prostate weight, body mass index, and race/ethnicity on the correlation of PSA derivatives with Gleason score 6 (Grade Group 1) tumor volume in a diverse cohort.

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Ethnic minorities in the United States have a higher prevalence of obesity, with higher levels reported in Latinos/Hispanics. A qualitative study was done to understand perceptions of obesity and identify factors that may enhance the attractiveness of a behavioral weight-loss intervention in the Latino community. Weight loss trials designed to target the Latino/Hispanic population may benefit by considering the Latino/Hispanic perception of the problem, the barriers to weight loss, and for study participation that may be specific to this population.

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Radical prostatectomy (RP) outcomes have been studied in White and Black non-Hispanic men qualifying for Epstein active surveillance criteria (EASC). Herein, we first analyzed such outcomes in White Hispanic men. We studied 70 men with nonpalpable Gleason score 3+3=6 (Grade Group [GG] 1) prostate cancer (PCa) with ≤2 positive cores on biopsy who underwent RP.

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Pulmonary embolism (PE) is a critical complication related to multiple disorders and different medical or cosmetic procedures. This case report presents two patients who were admitted for respiratory symptoms in the setting of previously receiving silicone injections for cosmetic purposes and were diagnosed with silicone pulmonary embolism. The relevance of including questions about all cosmetic procedures as a part of a medical history is highlighted, in particular about silicone injections.

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