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Caring for a person living with dementia (PLWD) can be challenging, making support services like respite important. Of the types of respite, research on paid professional in-home care specific to family caregivers of PLWD is limited. This study aimed to identify characteristics of dementia caregivers using paid in-home respite. A self-administered online survey (N = 98) examined use of in-home respite. Measures assessed depressive symptoms, burden, and self-rated health. Analyses included descriptive statistics and qualitative coding. Most respondents utilized weekly schedules of in-home respite with a moderate correlation between dependency and hours of respite. Caregivers' self-reported average health, depressive symptoms, and mild-to-moderate burden. The majority of users had lowered perceived stress, were satisfied with services, and indicated the importance of in-home respite during a pandemic. Future research should assess changes in use of paid in-home respite services and overall landscape of respite options for dementia caregivers.
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Demência , Cuidados Intermitentes , Humanos , Cuidadores , Demência/terapia , Inquéritos e Questionários , Salários e BenefíciosRESUMO
BACKGROUND: Sentinel lymph node biopsy (SLNB) has not been studied for invasive melanomas treated with Mohs micrographic surgery using frozen-section MART-1 immunohistochemical stains (MMS-IHC). The primary objective of this study was to assess the accuracy and compliance with National Comprehensive Cancer Network (NCCN) guidelines for SLNB in a cohort of patients who had invasive melanoma treated with MMS-IHC. METHODS: This retrospective cohort study included all patients who had primary, invasive, cutaneous melanomas treated with MMS-IHC at a single academic center between March 2006 and April 2018. The primary outcomes were the rates of documenting discussion and performing SLNB in patients who were eligible based on NCCN guidelines. Secondary outcomes were the rate of identifying the sentinel lymph node and the percentage of positive lymph nodes. RESULTS: In total, 667 primary, invasive, cutaneous melanomas (American Joint Committee on Cancer T1a-T4b) were treated with MMS-IHC. The median patient age was 69 years (range, 25-101 years). Ninety-two percent of tumors were located on specialty sites (head and/or neck, hands and/or feet, pretibial leg). Discussion of SLNB was documented for 162 of 176 (92%) SLNB-eligible patients, including 127 of 127 (100%) who had melanomas with a Breslow depth >1 mm. SLNB was performed in 109 of 176 (62%) SLNB-eligible patients, including 102 of 158 melanomas (65%) that met NCCN criteria to discuss and offer SLNB and 7 of 18 melanomas (39%) that met criteria to discuss and consider SLNB. The sentinel lymph node was successfully identified in 98 of 109 patients (90%) and was positive in 6 of those 98 patients (6%). CONCLUSIONS: Combining SLNB and MMS-IHC allows full pathologic staging and confirmation of clear microscopic margins before reconstruction of specialty site invasive melanomas. SLNB can be performed accurately and in compliance with consensus guidelines in patients with melanoma using MMS-IHC.
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Melanoma , Linfonodo Sentinela , Neoplasias Cutâneas , Adulto , Idoso , Idoso de 80 Anos ou mais , Humanos , Melanoma/patologia , Melanoma/cirurgia , Pessoa de Meia-Idade , Cirurgia de Mohs , Estudos Retrospectivos , Linfonodo Sentinela/patologia , Linfonodo Sentinela/cirurgia , Biópsia de Linfonodo Sentinela , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/cirurgiaRESUMO
BACKGROUND: Mohs micrographic surgery (MMS) for cutaneous melanoma is becoming more prevalent, but surgical technique varies. OBJECTIVE: To define variations in published techniques for MMS for melanoma. METHODS AND MATERIALS: A systematic review was performed of PubMed, EMBASE, and Scopus databases to identify all articles describing surgical techniques for MMS for melanoma. Technical details were recorded for the preoperative, intraoperative, and postoperative phases of MMS. RESULTS: Twenty-four articles were included. Mohs surgeons vary in how they assess clinical margins, how wide a margin they excise on the first MMS layer, and how they process tissue to determine tumor stage and margin clearance during MMS for melanoma. CONCLUSION: Mohs micrographic surgery for melanoma is performed with varied surgical techniques. To establish best practices, additional research is necessary to determine how different techniques affect outcomes.
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Melanoma/cirurgia , Cirurgia de Mohs/métodos , Neoplasias Cutâneas/cirurgia , HumanosRESUMO
BACKGROUND: Empathy is a well-established facet of clinical competency that research suggests is associated with enhanced medical student well-being. Since little is known about empathy and well-being before students enter medical school-during pre-medical education-the main goal of this study is to test a conceptual model of how clinical empathy is related to two indicators of well-being, depression, and burnout among pre-medical students. The theoretical model hypothesizes that three dimensions of clinical empathy-Perspective-Taking, Compassionate Care, and Standing in Patients' Shoes- will be directly and negatively related to depression, as well as indirectly through its inverse relationship with three facets of burnout, Emotional Exhaustion, Poor Academic Efficacy, and Cynicism. METHODS: Using survey data from a sample of 132 pre-medical students at an American Midwestern university, this study employs structural equation modeling (SEM) to test the theoretical model of the relationships between empathy, burnout, and depression among pre-medical students. We identify the direct effects of the three dimensions of the Jefferson Scale of Physician Empathy (JSE-S) on depression (CES-D), as well as the indirect effects of clinical empathy on depression through the three dimensions of the Maslach Burnout Inventory (MBI-S). RESULTS: SEM analyses show that while none of the three dimensions of the JSE-S are directly related to depression, clinical empathy does significantly affect depression indirectly through burnout. Specifically, as predicted, we find that Perspective-Taking decreases Emotional Exhaustion, but, contrary to expectations, Compassionate Care increases it. And, the positive relationship between Compassionate Care and Emotional Exhaustion is particularly strong. In turn, Perspective-Taking and Compassionate Care are associated with depression in opposite directions and to different degrees. CONCLUSIONS: Findings suggest that clinical empathy as measured by the JSE-S produces both positive and negative effects on personal well-being. We conclude that further conceptual clarity of clinical empathy is needed to better discern how the different dimensions impact different indicators of well-being. Given that pre-medical education is a crucial time for emotional socialization, the challenge for medical education will be fostering the positive, cognitive aspects of clinical empathy while simultaneously mitigating the adverse effects of affective empathy on medical student well-being.
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Esgotamento Profissional , Estudantes de Medicina , Empatia , Humanos , Modelos Teóricos , Inquéritos e QuestionáriosRESUMO
During the coronavirus disease 2019 (COVID-19) pandemic, providers and patients must engage in shared decision making regarding the pros and cons of early versus delayed interventions for localized skin cancer. Patients at highest risk of COVID-19 complications are older; are immunosuppressed; and have diabetes, cancer, or cardiopulmonary disease, with multiple comorbidities associated with worse outcomes. Physicians must weigh the patient's risk of COVID-19 complications in the event of exposure against the risk of worse oncologic outcomes from delaying cancer therapy. Herein, the authors have summarized current data regarding the risk of COVID-19 complications and mortality based on age and comorbidities and have reviewed the literature assessing how treatment delays affect oncologic outcomes. They also have provided multidisciplinary recommendations regarding the timing of local therapy for early-stage skin cancers during this pandemic with input from experts at 11 different institutions. For patients with Merkel cell carcinoma, the authors recommend prioritizing treatment, but a short delay can be considered for patients with favorable T1 disease who are at higher risk of COVID-19 complications. For patients with melanoma, the authors recommend delaying the treatment of patients with T0 to T1 disease for 3 months if there is no macroscopic residual disease at the time of biopsy. Treatment of tumors ≥T2 can be delayed for 3 months if the biopsy margins are negative. For patients with cutaneous squamous cell carcinoma, those with Brigham and Women's Hospital T1 to T2a disease can have their treatment delayed for 2 to 3 months unless there is rapid growth, symptomatic lesions, or the patient is immunocompromised. The treatment of tumors ≥T2b should be prioritized, but a 1-month to 2-month delay is unlikely to worsen disease-specific mortality. For patients with squamous cell carcinoma in situ and basal cell carcinoma, treatment can be deferred for 3 months unless the individual is highly symptomatic.
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Betacoronavirus , Tomada de Decisão Clínica/métodos , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/terapia , Médicos/psicologia , Pneumonia Viral/epidemiologia , Pneumonia Viral/terapia , Neoplasias Cutâneas/epidemiologia , Neoplasias Cutâneas/terapia , COVID-19 , Comorbidade , Infecções por Coronavirus/mortalidade , Infecções por Coronavirus/virologia , Humanos , Hospedeiro Imunocomprometido , Morbidade , Pandemias , Pneumonia Viral/mortalidade , Pneumonia Viral/virologia , SARS-CoV-2 , Tempo para o TratamentoRESUMO
Tumors can rarely overexpress human chorionic gonadotropin (hCG) resulting in false-positive pregnancy tests. Here, we report a 44-year-old female with a metastatic gastrointestinal stromal tumor (GIST) who presented with a positive urine pregnancy test before radiotherapy. Further workup ruled out pregnancy. Following radiotherapy, her metastatic disease progressed and her hCG level continued to rise. To the best of our knowledge, this is the first report of a GIST tumor overexpressing hCG.
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Folliculotropic mycosis fungoides is a variant of cutaneous T-cell lymphoma characterized as having a folliculocentric infiltrate of malignant T cells along with a worse prognosis in comparison to the epidermotropic variants. Patients with advanced forms of folliculotropic mycosis fungoides are often poorly responsive to both skin-directed as well as to systemic therapies. We report here a high response rate using a novel therapeutic regimen combining interferon gamma, isotretinoin in low dose and topical carmustine, and in some cases concomitant skin-directed therapies, among 6 consecutive patients with refractory folliculotropic mycosis fungoides with stages IB through IIIB who had previously failed both topical and systemic therapies. The potential mechanisms of this multimodality approach are discussed.
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Linfoma Cutâneo de Células T , Micose Fungoide , Neoplasias Cutâneas , Humanos , Micose Fungoide/tratamento farmacológico , Projetos Piloto , Pele , Neoplasias Cutâneas/tratamento farmacológicoRESUMO
BACKGROUND: By all indications, well-being among physicians is poor, which manifests in various outcomes, including burnout, depression/anxiety, low life satisfaction, alcohol/substance misuse, suicide ideation, and suicide. Despite the vast literature on physician burnout, there is relatively little research on how pre-clinical experiences in medical school may be an antecedent to subsequent poor health among physicians. Here we focus on two neglected areas within the literature by focusing on the pre-clinical stage of medical school and the positive, as opposed to exclusively the negative, aspects of the medical school experience as it affects well-being. METHODS: This study utilizes the metaphor of the Coping Reservoir Model as a theoretical and analytical framework for understanding medical student well-being by identify the 'depleting' and 'replenishing' inputs that are deposited into students' coping reservoirs. We analyze 105 medical students' reflective writings using a data analytic process consistent with an interpretive description approach, engaging in a hierarchical 3-step coding process to identify the main replenishing inputs deposited into students' coping reservoirs. RESULTS: The main depleting inputs that we identify are consistent with those identified by The Coping Reservoir Model. In addressing our main research question regarding the replenishing inputs, results show the main positive factors are psycho-social resources, intellectual stimulation, and social support/relationships. Most importantly, relationships with patients shape all three of these positive factors and provide the main source of hope that the stress of medical school will get better. CONCLUSIONS: What allows students to frame their experiences with hope and optimism are the connections they form with each other and with patients. The prolonged stress of medical school is made "worth it" in hopes that it will "get better" with more meaningful patient interaction in the future. These results that emphasize the positive aspects of medical school are discussed in context of their theoretical contributions to The Coping Reservoir Model and the practical implications for medical education to improve medical student well-being by facilitating human connection.
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Adaptação Psicológica , Educação de Graduação em Medicina , Relações Interpessoais , Relações Médico-Paciente , Apoio Social , Estudantes de Medicina/psicologia , HumanosRESUMO
OBJECTIVE: Substance use disorders (SUDs) are stigmatized conditions in medicine, with negative attitudes toward patients with SUDs beginning to form in medical school. Only a few studies with small samples show that attending an Alcoholics Anonymous (AA) meeting may help decrease addiction stigma. This study examined whether attending an AA meeting impacts medical student attitudes toward patients with SUDs and any gender and age group differences within these attitudes. METHODS: As part of their psychiatry clerkship, 138 third-year medical students attended an AA meeting and wrote reflection essays discussing expectations before the meeting, feelings while there, and thoughts on how these feelings might affect patient care. The authors performed a thematic analysis to identify themes and t tests to compare theme frequency by gender and age group. RESULTS: A primary theme in student responses was a reduction in stigmatizing attitudes, which was broken down into three subthemes: complexity of addiction (46%), diversity of people with addiction (37%), and practical applications (66%). Practical applications comprised compassionate care (53%) and intention to address SUDs clinically (35%). While no gender differences were found in theme frequency, younger students showed significantly higher frequency of all themes. CONCLUSIONS: Attending an AA meeting can challenge medical students' stigmatizing attitudes about addiction and increase flexibility of thinking. Younger students' biases may not be as solidified, stressing the importance of early exposure to patients in recovery during medical school. Attending an AA meeting and reflecting on the experience may be one way to decrease addiction stigma among medical students.
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Comportamento Aditivo , Psiquiatria , Estudantes de Medicina , Alcoólicos Anônimos , Atitude do Pessoal de Saúde , Humanos , Estigma SocialRESUMO
BACKGROUND: The American Society of Dermatologic Surgery (ASDS) is the major educational organization for dermatologic surgery in the United States. Presidents are elected annually from among their members. OBJECTIVE: The authors investigated the demographics, training, and achievements of the ASDS presidents. MATERIALS AND METHODS: All ASDS presidents (1970-2017) were included. Data were gathered using publicly available information from websites, curriculum vitae, and PubMed. Living presidents were contacted by email (if available) to verify the collected data. RESULTS: Of 46 ASDS presidents, 87% are male, with the first female president elected in 1994. Fifty-nine percent are members of the American College of Mohs Surgery. Seven presidents received dual fellowship training. Four presidents received a second graduate degree. Mean duration from residency to presidency was 22 years, with the mean age being 53 years. PubMed publication average was 34. All presidents have been affiliated with academic institutions, with 26% appointed as department chair and 30% serving as academic dermatologic surgery director. CONCLUSION: The authors report that most of the ASDS presidents have been male with over half receiving Mohs surgery fellowship training. All have had academic affiliations at some point in their careers, with some named department chairs and/or elected as presidents of other national dermatologic societies.
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Procedimentos Cirúrgicos Dermatológicos , Sociedades Médicas , Sociedades Médicas/organização & administração , Estados UnidosRESUMO
BACKGROUND: By providing tumor-free margins, Mohs micrographic surgery (MMS) results in high cure rates in the treatment of nonmelanoma skin cancers (NMSCs). However, when closure of the post-MMS defect is coordinated with reconstructive surgery, redundant tissue is sometimes submitted for permanent section evaluation. OBJECTIVE: The purpose of our study was to investigate the frequency and effect of this practice. MATERIALS AND METHODS: Patients (12 years and older) with NMSCs cleared by MMS with coordinated closures from 2014 to 2016 were identified. Cost analysis was performed using the 2016 Current Procedural Terminology codes and averaged nation-wide Medicare reimbursement rates. RESULTS: During the study period, 408 cases were coordinated with reconstructive surgeons post-MMS. Of these, 125 had specimens were submitted for permanent section with none showing residual malignancy. There were no significant differences between the cases sent for permanent section and the remaining coordinated MMS cases, with respect to patient age, to basal cell and squamous cell carcinoma histology, or to defect size (p > .05). The marginal cost of sending specimens for permanent section was $121 per case. CONCLUSION: Sending post-MMS redundant tissue for permanent sections may be of limited utility and should not be performed routinely. Additional work is warranted to determine when this practice should be used in conjunction with MMS.
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Assistência ao Convalescente/economia , Custos e Análise de Custo , Cirurgia de Mohs , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/cirurgia , Procedimentos Desnecessários/economia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto JovemRESUMO
Vasculitis may be caused by infection, medications, systemic diseases, malignancy, or occur as an idiopathic condition. In cases of drug-induced vasculitis, it is essential to identify and discontinue the culprit medication. As novel agents are approved through clinical trials, some rare events, including vasculitis, may not become apparent until wider use, and rigorous post-marketing surveillance for new medications is important. Physicians should consider drug-induced vasculitis on the differential for all new vasculitis diagnoses, and if the potential triggering medication is a novel medication, it is essential to rigorously investigate the potential for emerging cases of medication-associated vasculitis in all available scientific literature.
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Fármacos Dermatológicos/efeitos adversos , Psoríase/tratamento farmacológico , Ustekinumab/efeitos adversos , Vasculite/imunologia , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/diagnóstico , Biópsia , Fármacos Dermatológicos/administração & dosagem , Fármacos Dermatológicos/uso terapêutico , Diagnóstico Diferencial , Feminino , Glucocorticoides/administração & dosagem , Glucocorticoides/uso terapêutico , Humanos , Injeções Subcutâneas , Perna (Membro)/patologia , Pessoa de Meia-Idade , Prednisona/administração & dosagem , Prednisona/uso terapêutico , Pele/microbiologia , Pele/patologia , Staphylococcus aureus , Ustekinumab/administração & dosagem , Ustekinumab/uso terapêutico , Vasculite/diagnóstico , Vasculite/tratamento farmacológico , Vasculite/patologiaRESUMO
BACKGROUND: Assays identifying circulating tumor cells (CTCs) allow noninvasive and sequential monitoring of the status of primary or metastatic tumors, potentially yielding clinically useful information. However, to the authors' knowledge, the effect of radiation therapy (RT) on CTCs in patients with non-small cell lung cancer (NSCLC) has not been previously explored. METHODS: This report describes results from a pilot study of 30 patients with NSCLC who received RT. Peripheral blood samples obtained from these patients were assayed for CTCs using an assay that identified live cells using an adenoviral probe that detected the elevated telomerase activity present in almost all cancer cells, but not in normal cells, and the validity of the assay was confirmed with secondary tumor-specific markers. Patients were assayed before initiation of RT (pre-RT), during the RT course, and/or after the completion of RT (post-RT). RESULTS: The assay successfully detected CTCs in the majority of patients, including 65% of patients before the start of RT, and in patients with both epidermal growth factor receptor wild-type and mutation-positive tumors. The median CTC counts in patients before RT was 9.1 CTCs per mL (range, undetectable to 571 CTCs per mL) and was significantly higher than the average post-RT count of 0.6 CTCs per mL (range, undetectable to 1.8 CTCs per mL; P<.001). Sequential CTC counts were available in a subset of patients and demonstrated decreases after RT, except for 1 patient who subsequently developed distant failure. CONCLUSIONS: The current pilot data suggest that CTC counts appear to reflect response to RT in patients with localized NSCLC. On the basis of these promising results, the authors have launched a more comprehensive and detailed clinical trial.
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Carcinoma Pulmonar de Células não Pequenas/diagnóstico , Neoplasias Pulmonares/diagnóstico , Células Neoplásicas Circulantes/metabolismo , Telomerase/metabolismo , Idoso , Biomarcadores Tumorais/sangue , Biomarcadores Tumorais/metabolismo , Carcinoma Pulmonar de Células não Pequenas/sangue , Carcinoma Pulmonar de Células não Pequenas/radioterapia , Linhagem Celular Tumoral , Feminino , Humanos , Neoplasias Pulmonares/sangue , Neoplasias Pulmonares/radioterapia , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Telomerase/sangue , Resultado do TratamentoAssuntos
Antineoplásicos Alquilantes/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carmustina/administração & dosagem , Micose Fungoide/tratamento farmacológico , Neoplasias Cutâneas/tratamento farmacológico , Administração Cutânea , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Alquilantes/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Carmustina/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Micose Fungoide/patologia , Estadiamento de Neoplasias , Neoplasias Cutâneas/patologia , Fatores de Tempo , Resultado do TratamentoRESUMO
To offset disconcerting trends showing alarming rates of burnout and other types of psychological distress among medical students, many medical schools have implemented wellness initiatives for first year students as they are first adjusting to the rigors of medical school. This study examines students' attitudes toward a reflective writing-based wellness course. We conducted a thematic analysis of 97 writings that students wrote in response to a prompt asking them what they thought of the wellness course at an American Midwestern medical school. The most consistent perception that students expressed was that while they were deeply appreciative of the effort to integrate wellness into the curriculum (what we call Good in Theory ), they did not think it was implemented efficaciously and even, in some cases, felt that the wellness course contributed to their distress rather than alleviated it (what we call But ). Specifically, while the wellness course helped them prioritize wellness and fostered connection between fellow medical students, it also conflicted with their individualized notions of health and was a burden on their limited time. We discuss the findings in the context of their implications for medical education and argue that the implicit messages students internalized from the mere existence of a wellness program-that the university/faculty cares about them, they do not need to feel guilt when taking a break from medicine, they are not alone, and it is acceptable to express emotions-are all important for their professional socialization and personal well-being.
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Importance: Current recommendations regarding the size of local excision (LE) margins for Merkel cell carcinoma (MCC) have not been well established. Objective: To assess whether larger clinical LE margins and receipt of adjuvant radiotherapy are associated with improvements in overall survival (OS) among patients with localized MCC. Design, Setting, and Participants: This large multicenter retrospective cohort study used records from the National Cancer Database to identify adult patients with localized stage I or stage II MCC who underwent LE between January 1, 2004, and December 31, 2015. Data were analyzed from August 1, 2020, to January 25, 2021. Exposures: Local excision margin size and adjuvant radiotherapy. Main Outcomes and Measures: Overall and net survival were assessed using Cox multivariable regression analysis. Results: A total of 6156 patients with localized MCC (median age at diagnosis, 77 years [range, 27-90 years]; 2500 women [40.6%]). In the multivariable regression analysis, LE clinical margins larger than 1.0 cm were associated with improvements in OS (HR, 0.88; 95% CI, 0.81-0.95; P < .001) compared with margins of 1.0 cm or smaller, regardless of tumor subsite. At 5 years after surgery, LE margins of 1.0 cm or smaller were associated with a net survival of 76.7%, while LE margins larger than 1.0 cm were associated with a net survival of 89.8% (P < .001). Stratification of LE margins into 3 subgroups indicated that LE margins of 1.1 to 2.0 cm (HR, 0.87; 95% CI, 0.76-0.99; P = .047) and larger than 2.0 cm (HR, 0.84; 95% CI, 0.72-0.98; P = .03) were associated with improvements in OS compared with margins of 1.0 cm or smaller. In patients with less aggressive disease (ie, those who were immunocompetent and had tumors ≤1.0 cm, no lymphovascular invasion, and negative pathologic margins), LE margins larger than 1.0 cm were also associated with improvements in OS (HR, 0.87; 95% CI, 0.78-0.97; P = .01). Among patients who received adjuvant radiotherapy, larger LE margins were associated with improvements in OS (HR, 0.87; 95% CI, 0.76-0.98; P = .03). Receipt of adjuvant radiotherapy was also associated with improvements in OS within the 3 LE margin subgroups. Patients who received adjuvant radiotherapy and had LE margins of 1.0 cm or smaller (HR, 0.81; 95% CI, 0.74-0.89; P < .001) experienced OS that was comparable to that in patients who did not receive adjuvant radiotherapy and had LE margins larger than 1.0 cm (HR, 0.80; 95% CI, 0.71-0.89; P = .87). Conclusions and Relevance: In this study, LE clinical margins larger than 1.0 cm were associated with improvements in OS, and these improvements were independent of tumor subsite, receipt of adjuvant radiotherapy, positive pathologic margins, or adverse pathologic features for stage I to stage II MCC. Patients with LE margins of 1.0 cm or smaller who received adjuvant radiotherapy experienced OS that was similar to that of patients with larger LE margins who did not receive radiotherapy. The combination of LE clinical margins larger than 1.0 cm and adjuvant radiotherapy was associated with the highest OS.
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Carcinoma de Célula de Merkel/mortalidade , Carcinoma de Célula de Merkel/cirurgia , Margens de Excisão , Neoplasias Cutâneas/mortalidade , Neoplasias Cutâneas/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Célula de Merkel/patologia , Bases de Dados Factuais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Radioterapia Adjuvante , Estudos Retrospectivos , Neoplasias Cutâneas/patologia , Taxa de SobrevidaAssuntos
Hemorragia/radioterapia , Anormalidades Linfáticas/radioterapia , Síndrome de Noonan/radioterapia , Cuidados Paliativos , Dermatopatias/radioterapia , Abdome , Adulto , Virilha , Hemorragia/etiologia , Humanos , Anormalidades Linfáticas/etiologia , Masculino , Síndrome de Noonan/complicações , Períneo , Escroto , Dermatopatias/etiologiaRESUMO
Importance: Radiation dermatitis is common and often treated with topical therapy. Patients are typically advised to avoid topical agents for several hours before daily radiotherapy (RT) out of concern that topical agents might increase the radiation dose to the skin. With modern RT's improved skin-sparing properties, this recommendation may be irrelevant. Objective: To assess whether applying either metallic or nonmetallic topical agents before radiation treatment alters the skin dose. Design, Setting, and Participants: A 24-question online survey of patients and clinicians was conducted from January 15, 2015, to March 15, 2017, to determine current practices regarding topical therapy use. In preclinical studies, dosimetric effect of the topical agents was evaluated by delivering 200 monitor units and measuring the dose at the surface and at 2-cm depth in a tissue-equivalent phantom with or without 2 common topical agents: a petroleum-based ointment (Aquaphor, petrolatum 41%) and silver sulfadiazine cream, 1%. Skin doses associated with various photon and electron energies, topical agent thicknesses, and beam incidence were assessed. Whether topical agents altered the skin dose was also evaluated in 24 C57BL/6 mice by using phosphorylated histone (γ-H2AX) immunofluorescent staining and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay. Preclinical studies took place at the University of Pennsylvania. Main Outcomes and Measures: Patient and clinician survey responses; surface radiation dose readings in tissue-equivalent phantom; and γ-H2AX and TUNEL intensity measured in mice. Results: The 133 patients surveyed received RT for cancer and had a median (range) age of 60 (18-86) years; 117 (87.9%) were women. One hundred eight clinicians completed the survey with 105 reporting that they were involved in managing patient skin care during RT. One hundred eleven (83.4%) of the patients and 96 (91.4%) of the 105 clinicians received or gave the advice to avoid applying topical agents before RT treatments. Dosimetric measurements showed no difference in the delivered dose at either the surface or a 2-cm depth with or without a 1- to 2-mm application of either topical agent when using en face 6- or 15-megavoltage (MV) photons. The same application of topicals did not alter the surface dose as a function of beam incident angle from 15° to 60°, except for a 6% increase at 60° with the silver sulfadiazine cream. Surface dose for 6- and 15-MV beams were significantly increased with a thicker (≥3-mm) topical application. For 6 MV, the surface dose was 1.05 Gy with a thick layer of petroleum-based ointment and 1.02 Gy for silver sulfadiazine cream vs 0.88 Gy without topical agents. For 15 MV, the doses were 0.70 Gy for a thick layer of petroleum-based ointment and 0.60 Gy for silver sulfadiazine cream vs 0.52 Gy for the controls. With 6- and 9-MeV electrons, there was a 2% to 5% increase in surface dose with the use of the topical agents. There were no dose differences at 2-cm depth. Irradiated skin in mice showed no differences in γ-H2AX-positive foci or in TUNEL staining with or without topical agents of varying thickness. Conclusions and Relevance: Thin or moderately applied topical agents, even if applied just before RT, may have minimal influence on skin dose regardless of beam energy or beam incidence. The findings of this study suggest that applying very thick amounts of a topical agent before RT may increase the surface dose and should be avoided.