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1.
Nervenarzt ; 94(12): 1123-1128, 2023 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-37594495

RESUMEN

Magnetic resonance imaging (MRI) is of exceptional importance in the diagnostics and monitoring of multiple sclerosis (MS); however, a close interdisciplinary cooperation between neurologists in private practice, (neuro)radiological practices, hospitals or specialized MS centers is only rarely established. In particular, there is a lack of standardized MRI protocols for image acquisition as well as established quality parameters, which guarantee the comparability of MRI records; however, this is a fundamental prerequisite for an effective application of MRI in the treatment of MS patients, e.g., for making the diagnosis or treatment monitoring. To address these challenges a group of neurologists and (neuro)radiologists developed a consensus proposal for standardization of image acquisition, interpretation and transmission of results and for improvement in interdisciplinary cooperation. This pilot project in the metropolitan area of Essen used a modified Delphi process and was based on the most up to date scientific knowledge. The recommendation takes the medical, economic, temporal and practical aspects of MRI in MS into consideration. The model of interdisciplinary cooperation between radiologists and neurologists with the aim of a regional standardization of MRI could serve as an example for other regions of Germany in order to optimize MRI for MS.


Asunto(s)
Esclerosis Múltiple , Humanos , Esclerosis Múltiple/diagnóstico , Consenso , Proyectos Piloto , Imagen por Resonancia Magnética/métodos , Neurólogos
2.
Breast Cancer Res Treat ; 195(1): 33-41, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35816269

RESUMEN

PURPOSE: Mild breast cancer-related lymphedema (BCRL) is clinically diagnosed as a 5%-10% increase in arm volume, typically measured no earlier than 3-6 months after locoregional treatment. Early BCRL treatment is associated with better outcomes, yet amid increasing evidence that lymphedema exists in a latent form, treatment is typically delayed until arm swelling is obvious. In this study, we investigated whether near-infrared fluorescence lymphatic imaging (NIRF-LI) surveillance could characterize early onset of peripheral lymphatic dysfunction as a predictor of BCRL. METHODS: In a prospective, longitudinal cohort/observational study (NCT02949726), subjects with locally advanced breast cancer who received axillary lymph node dissection and regional nodal radiotherapy (RT) were followed serially, between 2016 and 2021, before surgery, 4-8 weeks after surgery, and 6, 12, and 18 months after RT. Arm volume was measured by perometry, and lymphatic (dys) function was assessed by NIRF-LI. RESULTS: By 18 months after RT, 30 of 42 study subjects (71%) developed mild-moderate BCRL (i.e., ≥ 5% arm swelling relative to baseline), all manifested by "dermal backflow" of lymph into lymphatic capillaries or interstitial spaces. Dermal backflow had an 83% positive predictive value and 86% negative predictive value for BCRL, with a sensitivity of 97%, specificity of 50%, accuracy of 83%, positive likelihood ratio of 1.93, negative likelihood ratio of 0.07, and odds ratio of 29.00. Dermal backflow appeared on average 8.3 months, but up to 23 months, before the onset of mild BCRL. CONCLUSION: BCRL can be predicted by dermal backflow, which often appears months before arm swelling, enabling early treatment before the onset of edema and irreversible tissue changes.


Asunto(s)
Linfedema del Cáncer de Mama , Neoplasias de la Mama , Vasos Linfáticos , Linfedema , Linfedema del Cáncer de Mama/diagnóstico por imagen , Linfedema del Cáncer de Mama/etiología , Neoplasias de la Mama/complicaciones , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/radioterapia , Femenino , Humanos , Escisión del Ganglio Linfático/efectos adversos , Vasos Linfáticos/diagnóstico por imagen , Linfedema/diagnóstico por imagen , Linfedema/etiología , Estudios Prospectivos
3.
Ann Surg Oncol ; 29(10): 6381-6392, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-35834145

RESUMEN

BACKGROUND: Inflammatory breast cancer (IBC) is a rare and aggressive subtype of breast cancer characterized by rapid progression and early metastasis, often with advanced nodal locations, including the supraclavicular (SCV) nodal basin. Previously considered M1 disease, ipsilateral clinical supraclavicular node involvement (N3c) disease is now considered locally advanced disease and warrants treatment with intent to cure. The objective of this study was to evaluate the long-term outcomes of patients with IBC and N3c disease. PATIENTS AND METHODS: This study was conducted using a prospectively collected database of all patients with IBC treated at a dedicated cancer center from 2007 to 2019. Surgical patients with SCV nodal involvement and complete follow-up were identified. Our primary outcome was 5-year overall survival (OS). Multivariate Cox proportional hazards models were used to determine predictors for survival. Event-free survival (EFS) and OS were calculated using the Kaplan-Meier method. RESULTS: There were 70 patients who met inclusion criteria. All patients underwent comprehensive trimodality therapy. The majority of patients had complete (66.2%) radiologic response in the SCV nodal basins following neoadjuvant therapy. Six patients (8.6%) had a locoregional recurrence, with two (2.9%) occurring in the supraclavicular fossa. The 5-year OS was 60.2% [95% confidence interval (CI) 47.7-72.7%]. Increasing age (hazard ratio 2.7; p = 0.03) and triple-negative subtype (hazard ratio 4.9; p = 0.03) were associated with poor OS. The 5-year EFS was 56.1% (95% CI 40.9-68.8%). The presence of more than ten positive axillary nodes on final surgical pathology (hazard ratio 5.5; p = 0.01) predicted poor EFS. CONCLUSIONS: With comprehensive trimodality therapy and multidisciplinary team approach, patients with IBC with supraclavicular nodal involvement experience excellent locoregional control and favorable survival.


Asunto(s)
Neoplasias de la Mama , Neoplasias Inflamatorias de la Mama , Neoplasias de la Mama/cirugía , Femenino , Humanos , Neoplasias Inflamatorias de la Mama/patología , Neoplasias Inflamatorias de la Mama/terapia , Ganglios Linfáticos/patología , Terapia Neoadyuvante , Recurrencia Local de Neoplasia/patología , Recurrencia Local de Neoplasia/terapia , Modelos de Riesgos Proporcionales , Estudios Retrospectivos
4.
Oncologist ; 25(6): e990-e992, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32272505

RESUMEN

Male breast cancer treatment regimens are often extrapolated from female-based studies because of a paucity of literature analyzing male breast cancer. Using ClinicalTrials.gov, we analyzed breast cancer randomized clinical trials (RCTs) to determine which factors were associated with male-gender inclusion. Of 131 breast cancer RCTs identified, male patients represented 0.087% of the total study population, which is significantly less than the proportion of male patients with breast cancer in the U.S. (0.95%; p < .001). Twenty-seven trials included male patients (20.6%). Lower rates of male inclusion were seen in trials that randomized or mandated hormone therapy as part of the trial protocol compared with trials that did not randomize or mandate endocrine therapy (2.5% vs. 28.6% male inclusion; p < .001). It is imperative for breast cancer clinical trials to include men when allowable in order to improve generalizability and treatment decisions in male patients with breast cancer.


Asunto(s)
Neoplasias de la Mama , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/epidemiología , Femenino , Humanos , Masculino
5.
Lancet Oncol ; 18(4): e228-e232, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-28368261

RESUMEN

In the absence of histological criteria that distinguish between inflammatory and non-inflammatory breast cancer, diagnosis of inflammatory breast cancer relies entirely on the existence of clinical criteria as outlined by the TNM classification. This classification restricts patients presenting with clinical criteria characteristic of inflammatory breast cancer to subcategory T4d, which immediately relegates all patients with non-metastatic inflammatory breast cancer to stage 3, regardless of tumour size or nodal spread. Patients who present with metastatic disease are consigned to stage 4, and the TNM classification does not distinguish patients on the basis of the presence of inflammatory criteria. Evidence by our group and others suggests that patients with inflammatory breast cancer have significantly reduced overall survival among those who present with distant metastasis at diagnosis (stage 4). In light of these results, this Personal View addresses whether the current TNM staging classification accurately represents a distinction between patients with inflammatory and those with non-inflammatory breast cancer.


Asunto(s)
Neoplasias Inflamatorias de la Mama/patología , Estadificación de Neoplasias/normas , Femenino , Humanos , Neoplasias Inflamatorias de la Mama/clasificación
7.
Ann Surg Oncol ; 24(10): 2965-2971, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28766219

RESUMEN

BACKGROUND: An integrated approach to skin sparing mastectomy with tissue expander placement followed by radiotherapy and delayed reconstruction was initiated in our institution in 2002. The purpose of this study was to assess the surgical outcomes of this strategy. METHODS: Between September 2002 and August 2013, a total of 384 reconstructions had a tissue expander placed at the time of mastectomy and subsequently underwent radiotherapy. Rates and causes of tissue expander explantation before, during, and after radiotherapy, as well as tumor specific outcomes and reconstruction approaches, were collected. RESULTS: Median follow-up after diagnosis was 5.6 (range 1.3-13.4) years. In the study cohort, 364 patients (94.8%) had stage II-III breast cancer, and 7 patients (1.8%) had locally recurrent disease. The 5-year rates of actuarial locoregional control, disease-free survival, and overall survival were 99.2, 86.1, and 92.4%, respectively. The intended delayed-immediate reconstruction was subsequently completed in 325 of 384 mastectomies (84.6% of the study cohort). Of the remaining 59 tissue expanders, 1 was explanted before radiotherapy, 1 during radiotherapy, and 7 patients (1.8%) were lost to follow-up. Fifty patients (13.0%) required tissue expander explantation after radiation and before their planned final reconstruction, primarily due to cellulitis. Nonetheless, the cumulative rate of completed reconstructions was 89.6%. The median time from placement of the tissue expander until reconstruction was 12 (interquartile range 9-15) months. CONCLUSIONS: Tissue expander placement at skin-sparing mastectomy in patients who require radiotherapy appears to be a viable strategy for combining reconstruction and radiotherapy.


Asunto(s)
Neoplasias de la Mama/cirugía , Carcinoma Ductal de Mama/cirugía , Carcinoma Lobular/cirugía , Mamoplastia , Mastectomía , Recurrencia Local de Neoplasia/diagnóstico , Expansión de Tejido , Adulto , Anciano , Implantes de Mama , Neoplasias de la Mama/patología , Neoplasias de la Mama/terapia , Carcinoma Ductal de Mama/patología , Carcinoma Ductal de Mama/terapia , Carcinoma Lobular/patología , Carcinoma Lobular/terapia , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Invasividad Neoplásica , Pronóstico , Radioterapia , Estudios Retrospectivos , Tasa de Supervivencia , Factores de Tiempo , Dispositivos de Expansión Tisular
8.
Cancer ; 122(18): 2886-94, 2016 09 15.
Artículo en Inglés | MEDLINE | ID: mdl-27305037

RESUMEN

BACKGROUND: The authors compared longitudinal patient-reported outcomes and physician-rated cosmesis with conventionally fractionated whole-breast irradiation (CF-WBI) versus hypofractionated whole-breast irradiation (HF-WBI) within the context of a randomized trial. METHODS: From 2011 to 2014, a total of 287 women with American Joint Committee on Cancer stage 0 to stage II breast cancer were randomized to receive CF-WBI (at a dose of 50 grays in 25 fractions plus a tumor bed boost) or HF-WBI (at a dose of 42.56 grays in 16 fractions plus a tumor bed boost) after breast-conserving surgery. Patient-reported outcomes were assessed using the Breast Cancer Treatment Outcome Scale (BCTOS), the Functional Assessment of Cancer Therapy-Breast, and the Body Image Scale and were recorded at baseline and 0.5, 1, 2, and 3 years after radiotherapy. Physician-rated cosmesis was assessed at the same time points. Outcomes by treatment arm were compared at each time point using a 2-sided Student t test. Multivariable mixed effects growth curve models assessed the effects of treatment arm and time on longitudinal outcomes. RESULTS: Of the 287 patients enrolled, 149 were randomized to CF-WBI and 138 were randomized to HF-WBI. At 2 years, the Functional Assessment of Cancer Therapy-Breast Trial Outcome Index score was found to be modestly better in the HF-WBI arm (mean 79.6 vs 75.9 for CF-WBI; P = .02). In multivariable mixed effects models, treatment arm was not found to be associated with longitudinal outcomes after adjusting for time and baseline outcome measures (P≥.14). The linear effect of time was significant for BCTOS measures of functional status (P = .001, improved with time) and breast pain (P = .002, improved with time). CONCLUSIONS: In this randomized trial, longitudinal outcomes did not appear to differ by treatment arm. Patient-reported functional and pain outcomes improved over time. These findings are relevant when counseling patients regarding decisions concerning radiotherapy. Cancer 2016. © 2016 American Cancer Society. Cancer 2016;122:2886-2894. © 2016 American Cancer Society.


Asunto(s)
Neoplasias de la Mama/radioterapia , Adulto , Anciano , Anciano de 80 o más Años , Fraccionamiento de la Dosis de Radiación , Femenino , Humanos , Estudios Longitudinales , Persona de Mediana Edad , Medición de Resultados Informados por el Paciente , Radioterapia Adyuvante
9.
Ann Surg Oncol ; 23(11): 3501-3509, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27216742

RESUMEN

BACKGROUND: Many patients with clinically node-positive breast cancer receive neoadjuvant chemotherapy (NAC). Recent trials suggest the potential for limiting axillary surgery in patients who convert to pathologically node-negative disease. The authors developed a nomogram to predict axillary response to NAC in patients with cN1 disease that can assist clinicians in treatment planning. METHODS: Patients with cT1-4N1M0 breast cancer who received NAC and underwent axillary lymph node dissection from 2001 through 2013 were identified (n = 584). Uni- and multivariate logistic regression analyses were performed to determine factors predictive of nodal conversion. A nomogram to predict the likelihood of nodal pathologic complete response (pCR) was constructed based on clinicopathologic variables and validated using an external dataset. RESULTS: Axillary pCR was achieved for 217 patients (37 %). Patients presenting with high nuclear grade [grade 3 vs. 1, odds ratio (OR) 13.4], human epidermal growth factor receptor 2-positive (OR 4.7), estrogen receptor (ER)-negative (OR 3.5), or progesterone receptor-negative (OR 4.3) tumors were more likely to achieve nodal pCR. These factors, together with clinically relevant factors including presence of multifocal/centric disease, clinical T stage, and extent of nodal disease seen on regional nodal ultrasound at diagnosis were used to create nomograms predicting nodal conversion. The discrimination of the nomogram using ER+ status (>1 % staining) versus ER- status [area under the curve (AUC) 78 %] was improved slightly using the percentage of ER staining (AUC 78.7 %). Both nomograms were validated using an external cohort. CONCLUSION: Nomograms incorporating routine clinicopathologic parameters can predict axillary pCR in node-positive patients receiving NAC and may help to inform treatment decisions.


Asunto(s)
Antineoplásicos/uso terapéutico , Neoplasias de la Mama/patología , Ganglios Linfáticos/patología , Neoplasias Primarias Múltiples/patología , Nomogramas , Adulto , Anciano , Anciano de 80 o más Años , Área Bajo la Curva , Axila , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/metabolismo , Quimioterapia Adyuvante , Femenino , Humanos , Ganglios Linfáticos/diagnóstico por imagen , Metástasis Linfática , Persona de Mediana Edad , Terapia Neoadyuvante , Clasificación del Tumor , Estadificación de Neoplasias , Neoplasias Primarias Múltiples/tratamiento farmacológico , Neoplasias Primarias Múltiples/metabolismo , Curva ROC , Receptor ErbB-2/metabolismo , Receptores de Estrógenos/metabolismo , Receptores de Progesterona/metabolismo , Resultado del Tratamiento , Ultrasonografía
10.
Cancer ; 121(24): 4324-32, 2015 Dec 15.
Artículo en Inglés | MEDLINE | ID: mdl-26348887

RESUMEN

BACKGROUND: This study sought to determine outcomes for patients with metastatic breast cancer (MBC) with no evidence of disease (NED) after treatment and to identify factors predictive of outcomes once the status of NED was attained. METHODS: This study reviewed 570 patients with MBC who were consecutively treated between January 2003 and December 2005. Ninety patients (16%) attained NED, which was defined as a complete metabolic response on positron emission tomography or sclerotic healing of bone metastases on computed tomography or magnetic resonance imaging. The median follow-up for patients attaining NED was 100 months (range, 14-134 months). RESULTS: The 3- and 5-year overall survival (OS) rates were 44% and 24%, respectively, for the entire group and 96% and 78%, respectively, for those attaining NED. According to a landmark analysis, NED status was significantly associated with survival at 2 (P < .001; hazard ratio [HR], 0.23; 95% confidence interval [CI], 0.16-0.34) and 3 years (P < .001; HR, 0.20; 95% CI, 0.14-0.30). From the time of NED, the median survival was 102 months (range, 14-134 months) with 5-year OS and progression-free survival (PFS) rates of 77% and 40%, respectively. According to a multivariate analysis, human epidermal growth factor receptor 2 positivity was significantly associated with OS in comparison with estrogen receptor positivity (P = .02; HR, 0.44; 95% CI, 0.21-0.90), and trastuzumab use was significantly associated with PFS (P = .007; HR, 0.48; 95% CI, 0.28-0.82). Thirty-one patients (34%) with NED remained in remission at the last follow-up. CONCLUSIONS: MBC patients who attain the status of NED have significantly prolonged survival with a durable response to therapy. Ultimately, this study provides essential outcome data for clinicians and patients living with MBC.


Asunto(s)
Antineoplásicos Hormonales/uso terapéutico , Neoplasias Óseas/terapia , Neoplasias de la Mama/terapia , Carcinoma Ductal de Mama/terapia , Carcinoma Lobular/terapia , Neoplasias Hepáticas/terapia , Neoplasias Pulmonares/terapia , Trastuzumab/uso terapéutico , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/uso terapéutico , Neoplasias Óseas/diagnóstico , Neoplasias Óseas/secundario , Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/diagnóstico , Carcinoma Ductal de Mama/secundario , Carcinoma Lobular/diagnóstico , Carcinoma Lobular/secundario , Estudios de Cohortes , Supervivencia sin Enfermedad , Femenino , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/secundario , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/secundario , Imagen por Resonancia Magnética , Persona de Mediana Edad , Tomografía de Emisión de Positrones , Pronóstico , Radioterapia/métodos , Inducción de Remisión , Estudios Retrospectivos , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Adulto Joven
11.
Cancer Immunol Immunother ; 64(10): 1215-27, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26076666

RESUMEN

The MYCN oncogene is a strong genetic marker associated with poor prognosis in neuroblastoma (NB). Therefore, MYCN gene amplification and subsequent overexpression provide a possible target for new treatment approaches in NB. We first identified an inverse correlation of MYCN expression with CD45 mRNA in 101 NB tumor samples. KEGG mapping further revealed that MYCN expression was associated with immune-suppressive pathways characterized by a down-regulation of T cell activation and up-regulation of T cell inhibitory gene transcripts. We then aimed to investigate whether DNA vaccination against MYCN is effective to induce an antigen-specific and T cell-mediated immune response. For this purpose, we generated a MYCN-expressing syngeneic mouse model by MYCN gene transfer to NXS2 cells. MYCN-DNA vaccines were engineered based on the pCMV-F3Ub plasmid backbone to drive ubiquitinated full-length MYCN-cDNA and minigene expression. Vaccines were delivered orally with attenuated S. typhimurium strain SL7207 as a carrier. Immunization with both MYCN-DNA vaccines significantly reduced primary tumor growth of MYCN-expressing NB cells in contrast to negative controls. The immune response was mediated by tumor-infiltrating T cells in vivo, which revealed MYCN-specific and MHC class I-restricted lysis of inducible MYCN-expressing NB target cells in vitro. Finally, these antigen-specific T cells also killed MYCN-negative mammary carcinoma cells pulsed with MYCN peptides in contrast to controls. In summary, we demonstrate proof of concept that MYCN can be targeted by DNA vaccination, which may provide an approach to overcoming MYCN immune-suppressive activities in patients with MYCN-amplified disease.


Asunto(s)
Carcinoma/inmunología , Epítopos de Linfocito B/metabolismo , Linfocitos Infiltrantes de Tumor/inmunología , Neoplasias Mamarias Animales/inmunología , Neuroblastoma/inmunología , Proteínas Proto-Oncogénicas/metabolismo , Vacunas contra la Salmonella/administración & dosificación , Salmonella typhimurium/inmunología , Vacunas Atenuadas/administración & dosificación , Vacunas de ADN/administración & dosificación , Administración Oral , Animales , Carcinoma/microbiología , Línea Celular Tumoral , Citotoxicidad Inmunológica , Epítopos de Linfocito B/genética , Regulación Neoplásica de la Expresión Génica , Humanos , Neoplasias Mamarias Animales/microbiología , Ratones , Ratones Endogámicos , Proteína Proto-Oncogénica N-Myc , Trasplante de Neoplasias , Neoplasias Experimentales , Neuroblastoma/genética , Neuroblastoma/microbiología , Fragmentos de Péptidos , Proteínas Proto-Oncogénicas/genética , Transgenes/genética , Carga Tumoral , Vacunación
12.
J Neuroradiol ; 41(1): 87-91, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24405685

RESUMEN

Arteriovenous malformations (AVMs) may be cured by injecting liquid embolic agents such as Onyx. Reflux, however, can sometimes be difficult to control and may jeopardize a complete embolization. The pressure cooker technique (PCT) was designed to create an anti-reflux plug by trapping the detachable part of an Onyx-compatible microcatheter with coils and glue in order to obtain wedge-flow conditions, thereby enabling a better understanding of macrofistulous AVMs and a more comprehensive, forceful and controlled Onyx embolization. The PCT might enlarge the range of AVMs amenable to endovascular cure. Three illustrative cases are presented.


Asunto(s)
Dimetilsulfóxido/administración & dosificación , Embolización Terapéutica/instrumentación , Embolización Terapéutica/métodos , Enbucrilato/administración & dosificación , Hemostáticos/administración & dosificación , Malformaciones Arteriovenosas Intracraneales/terapia , Polivinilos/administración & dosificación , Dispositivos de Acceso Vascular , Adulto , Diseño de Equipo , Análisis de Falla de Equipo , Femenino , Humanos , Inyecciones Intravenosas/instrumentación , Malformaciones Arteriovenosas Intracraneales/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Presión , Radiografía , Adhesivos Tisulares/administración & dosificación , Resultado del Tratamiento , Adulto Joven
13.
Int Rev Cell Mol Biol ; 384: 25-46, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38637098

RESUMEN

Inflammatory breast cancer (IBC) is a diagnosis based on a constellation of clinical features of edema (peau d'orange) of a third or more of the skin of the breast with a palpable border and a rapid onset of breast erythema. Incidence of IBC has increased over time, although it still makes up only 1-4% of all breast cancer diagnoses. Despite recent encouraging data on clinical outcomes, the published local-regional control rates remain consistently lower than the rates for non-IBC. In this review, we focus on radiotherapy, provide a framework for multi-disciplinary care for IBC, describe local-regional treatment techniques for IBC; highlight new directions in the management of patients with metastatic IBC and offer an introduction to future directions regarding the optimal treatment and management of IBC.


Asunto(s)
Neoplasias de la Mama , Neoplasias Inflamatorias de la Mama , Humanos , Femenino , Neoplasias Inflamatorias de la Mama/radioterapia , Neoplasias Inflamatorias de la Mama/diagnóstico , Neoplasias Inflamatorias de la Mama/patología , Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/patología
14.
Artículo en Inglés | MEDLINE | ID: mdl-39147206

RESUMEN

PURPOSE: Radiation therapy is an underinvestigated tool for priming the immune system in intact human breast cancers. We sought here to investigate if a preoperative radiation therapy boost delivered was associated with a significant change in tumor-infiltrating lymphocytes (TILs) in the tumor in estrogen receptor positive, HER2Neu nonamplified breast cancers. METHODS AND MATERIALS: A total of 20 patients were enrolled in a phase 2 clinical trial and received either 7.5 Gy × 1 fraction or 2 Gy × 5 fractions, completed 6 to 8 days before surgery. Percent stromal TILs were evaluated on hematoxylin and eosin-stained samples. Short-term safety was assessed based on time to surgery, toxicities, and cosmesis up to 6 months after boost. RESULTS: Stromal TIL increased 6 to 8 days after completion of boost radiation therapy (median 3.0 [IQR, 1.0-6.5]) before radiation therapy versus median 5.0 (IQR, 1.5-8.0) after radiation therapy, P = .0037. Zero grade ≥3 toxicities up to 6 months after boost were experienced. In all, 94% (16/17) patients with 6-month follow-up cosmetic assessment after breast conservation had good-excellent cosmesis by physician assessment. CONCLUSION: In this phase 2 trial, preoperative radiation therapy boost resulted in a short-term increase in stromal TIL with minimal toxicities. Preoperative breast radiation therapy appears to be safe and may be a feasible means for priming the tumor microenvironment.

15.
Int J Cancer ; 133(4): 908-19, 2013 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-23400852

RESUMEN

High levels of the NTRK1/TrkA receptor are expressed in low-stage neuroblastomas, which are characterized by a good patient prognosis and often undergo spontaneous regression. In addition to apoptosis, tumor-immune responses might contribute to this regression. We hypothesized that TrkA expression might enhance the immune response to neuroblastomas. Immunohistochemistry on neuroblastoma tissue microarrays confirmed significantly higher lymphocyte infiltration in low-stage compared with high-stage tumors. Flow cytometry of human SH-SY5Y cells stably transfected with NTRK1/TrkA cDNA revealed significant upregulation of major histocompatibility complex (MHC) class I complexes on TrkA-expressing cells. Corresponding to this upregulation, T cell activity and cytoxicity was enhanced in the presence of SY5Y-TrkA cells or by medium conditioned by them, suggesting the existence of additional soluble factors stimulating the T cell response. Activation of natural killer (NK) cells was only increased in the presence of SY5Y-TrkA conditioned medium (CM) and not in co-culture assays, suggesting a dominant inhibitory effect of upregulated MHC class I as the primary NK cell escape mechanism of TrkA-expressing neuroblastomas. We reanalyzed gene expression data obtained from the cell culture model to identify additional genes involved in the TrkA-mediated modulation of immune responses. Upregulation of selected target genes in SY5Y-TrkA cells was confirmed on transcript and protein levels. However, none of the proteins were detected in medium conditioned by SY5Y-TrkA cells, arguing against these factors as soluble mediators of the TrkA-induced immune response. We here provide evidence that TrkA expression in neuroblastoma leads to an increased immunogenicity that may contribute to a less malignant phenotype and/or spontaneous regression of neuroblastoma cells.


Asunto(s)
Neuroblastoma/metabolismo , Receptor trkA/inmunología , Western Blotting , Línea Celular Tumoral , Medios de Cultivo Condicionados , Citotoxicidad Inmunológica , Ensayo de Inmunoadsorción Enzimática , Citometría de Flujo , Antígenos de Histocompatibilidad Clase I/inmunología , Humanos , Células Asesinas Naturales/inmunología , Neuroblastoma/genética , Neuroblastoma/inmunología , Neuroblastoma/patología , Reacción en Cadena en Tiempo Real de la Polimerasa , Análisis de Matrices Tisulares
16.
Neuroradiology ; 55(8): 989-992, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23644542

RESUMEN

INTRODUCTION: The arteries of bifurcation aneurysms are sometimes so angulated or tortuous that an exchange maneuver is necessary to catheterize them with a balloon or stent delivery catheter. Because of the risk of distal wire perforation associated with exchange maneuvers, we sought to find an alternative technique. METHODS: Our experience shows that a microcatheter tends to preferentially follow a previously placed microcatheter, even if the initial catheterization might be challenging. Accessing an artery with two microcatheters simultaneously may thus be an alternative to an exchange maneuver. Because of this tendency for catheters to behave like sheep following one another, we named this method the sheeping technique (ST). The ST consists of (a) first placing a 1.7 French microcatheter into the division branch requiring balloon or stent protection to straighten the course of the arteries in order to facilitate and (b) positioning in the same artery of a larger and stiffer balloon or stent microcatheter. Once the second balloon or stent microcatheter is in place, the first microcatheter can be pulled back and used to coil the aneurysm. RESULTS: Between January 2009 and December 2012, The ST was successfully used in 208/246 procedures (85%). Conversion to an exchange maneuver was necessary in 38/246 (15%). There were no arterial perforations or ischemic events related to the handling of both microcatheters. CONCLUSION: The sheeping technique may improve safety by replacing the need for an exchange maneuver during difficult balloon- or stent-assisted coiling.


Asunto(s)
Angioplastia de Balón/métodos , Angioplastia de Balón/estadística & datos numéricos , Cateterismo/estadística & datos numéricos , Aneurisma Intracraneal/epidemiología , Aneurisma Intracraneal/cirugía , Trombolisis Mecánica/métodos , Trombolisis Mecánica/estadística & datos numéricos , Cateterismo/métodos , Femenino , Alemania/epidemiología , Humanos , Aneurisma Intracraneal/diagnóstico por imagen , Persona de Mediana Edad , Prevalencia , Radiografía , Estudios Retrospectivos , Factores de Riesgo , Resultado del Tratamiento
17.
Pract Radiat Oncol ; 2023 Oct 31.
Artículo en Inglés | MEDLINE | ID: mdl-37914083

RESUMEN

PURPOSE: Dermal backflow visualized on near-infrared fluorescence lymphatic imaging (NIRF-LI) signals preclinical lymphedema that precedes the development of volumetrically defined lymphedema. We sought to evaluate whether dermal backflow correlates with patient-reported lymphedema outcomes (PRLO) surveys in breast cancer patients treated with regional nodal irradiation (RNI). METHODS AND MATERIALS: Patients with breast cancer planned for axillary dissection and RNI prospectively underwent perometry, NIRF-LI, and PRLOs (the Lymphedema Symptom Intensity and Distress Survey [LSIDS] and QuickDASH) at baseline, after surgery, and at 6, 12, and 18 months after radiation. Clinical lymphedema was defined as an arm volume increase ≥5% over baseline. Trends over time were assessed using analysis of variance testing. The association between survey responses and both dermal backflow and lymphedema was assessed using a linear mixed-effects model. RESULTS: Sixty participants completed at least 2 sets of measurements and surveys and were eligible for analysis. Fifty-four percent of patients had cT3-T4 disease, 53% cN3 disease, and 75% had a body mass index >25. Dermal backflow and clinical lymphedema increased from 10% to 85% and from 0% to 40%, respectively, from baseline to 18 months. In the adjusted model, soft tissue sensation, neurologic sensation, and functional LSIDS subscale scores were associated with presence of dermal backflow (all P < .05). Both dermal backflow and lymphedema were associated with QuickDASH score (P < .05). CONCLUSIONS: In this high-risk cohort, we found highly prevalent early signs of lymphedema, with increased symptom burden from baseline. Presence of dermal backflow correlated with PRLO measures, highlighting a potential NIRF-LI use to identify patients for early intervention trials after RNI.

18.
Int J Radiat Oncol Biol Phys ; 115(3): 629-644, 2023 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-36216274

RESUMEN

PURPOSE: Evidence supports use of partial-breast irradiation (PBI) in the management of early breast cancer, but the optimal dose-fractionation remains unsettled. METHODS AND MATERIALS: We conducted a phase 2 clinical trial (OPAL trial) to evaluate a novel PBI dosing schedule of 35 Gy in 10 daily fractions. Patients with close (<2 mm) margins also received a boost of 9 Gy in 3 fractions. Eligible patients underwent margin-negative lumpectomy for ductal carcinoma in situ or estrogen receptor-positive invasive breast cancer, up to 3 cm, pTis-T2 N0. The primary outcome was any grade ≥2 toxic effect occurring from the start of radiation through 6 months of follow-up. Secondary outcomes included patient-reported cosmesis, breast pain, and functional status, measured using the Breast Cancer Treatment Outcomes Scale, and physician-reported cosmesis, measured using the Radiation Therapy and Oncology Group scale. The Cochran-Armitage trend test and multivariable mixed-effects longitudinal growth curve models compared outcomes for the OPAL study population with those for a control group of similar patients treated with whole-breast irradiation (WBI) plus boost. RESULTS: All 149 patients enrolled on the OPAL trial received the prescribed dose, and 17.4% received boost. The median age was 64 years; 83.2% were White, and 73.8% were overweight or obese. With median follow-up of 2.0 years, 1 patient (0.7%) experienced in-breast recurrence. Prevalence of the primary toxicity outcome was 17.4% (26 of 149 patients) in the OPAL trial compared with 72.7% (128 of 176 patients) in the control WBI-plus-boost cohort (P < .001). In longitudinal multivariable analysis, treatment on the OPAL trial was associated with improved patient-reported cosmesis (P < .001), functional status (P = .004), breast pain (P = .004), and physician-reported cosmesis (P < .001). CONCLUSIONS: Treatment with daily PBI was associated with substantial reduction in early toxicity and improved patient- and physician-reported outcomes compared with WBI plus boost. Daily external-beam partial-breast irradiation with 13 or fewer fractions merits further prospective evaluation.


Asunto(s)
Neoplasias de la Mama , Carcinoma Intraductal no Infiltrante , Mastodinia , Humanos , Persona de Mediana Edad , Femenino , Resultado del Tratamiento , Mastodinia/etiología , Neoplasias de la Mama/patología , Carcinoma Intraductal no Infiltrante/radioterapia , Carcinoma Intraductal no Infiltrante/patología , Radioterapia Adyuvante/efectos adversos , Radioterapia Adyuvante/métodos , Mastectomía Segmentaria
19.
Breast ; 68: 205-215, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36863241

RESUMEN

BACKGROUND: We examined how breast cancer-related lymphedema (BCRL) affects health-related quality of life (HRQOL), productivity, and compliance with therapeutic interventions to guide structuring BCRL screening programs. METHODS: We prospectively followed consecutive breast cancer patients who underwent axillary lymph node dissection (ALND) with arm volume screening and measures assessing patient-reported health-related quality of life (HRQOL) and perceptions of BCRL care. Comparisons by BCRL status were made with Mann-Whitney U, Chi-square, Fisher's exact, or t tests. Trends over time from ALND were assessed with linear mixed-effects models. RESULTS: With a median follow-up of 8 months in 247 patients, 46% self-reported ever having BCRL, a proportion that increased over time. About 73% reported fear of BCRL, which was stable over time. Further in time from ALND, patients were more likely to report that BCRL screening reduced fear. Patient-reported BCRL was associated with higher soft tissue sensation intensity, biobehavioral, and resource concerns, absenteeism, and work/activity impairment. Objectively measured BCRL had fewer associations with outcomes. Most patients reported performing prevention exercises, but compliance decreased over time; patient-reported BCRL was not associated with exercise frequency. Fear of BCRL was positively associated with performing prevention exercises and using compressive garments. CONCLUSIONS: Both incidence and fear of BCRL were high after ALND for breast cancer. Fear was associated with improved therapeutic compliance, but compliance decreased over time. Patient-reported BCRL was more strongly associated with worse HRQOL and productivity than was objective BCRL. Screening programs must support patients' psychological needs and aim to sustain long-term compliance with recommended interventions.


Asunto(s)
Linfedema del Cáncer de Mama , Neoplasias de la Mama , Linfedema , Humanos , Femenino , Neoplasias de la Mama/patología , Estudios Prospectivos , Calidad de Vida , Detección Precoz del Cáncer , Linfedema/etiología , Linfedema del Cáncer de Mama/etiología , Escisión del Ganglio Linfático/efectos adversos , Atención Dirigida al Paciente
20.
J Neurooncol ; 108(3): 507-12, 2012 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-22437346

RESUMEN

The objective of the study is to define the tumor control rate and complications associated with stereotactic radiosurgery (SRS) for patients with recurrent intracranial ependymoma. Retrospective review of 26 patients (49 tumors) having SRS between 1990 and 2008. Twenty-five patients (96 %) had undergone one or more craniotomies; one patient underwent SRS for a metastatic tumor after resection of a spinal ependymoma. Nineteen patients (73 %) had received cranial external beam radiotherapy (median dose, 54 Gy). Eight patients (31 %) were less than 18 years old. The median target volume was 2.2 cm(3) (range, 0.3-66.6); the median tumor margin dose was 18 Gy (range, 12-24). The median follow-up after SRS was 3.1 years (range, 3 months-13.1 years). The median overall survival after SRS was 5.5 years. The 1-year and 3-year survival rates were 96 and 69 %, respectively. Local tumor control (LC) was achieved in 33 of 49 lesions (67 %) with a median time to progression of 14.7 months (range, 2.9 months-11.2 years). The 1-year and 3-year progression-free survival rates were 80 and 66 %, respectively. The 1-year and 3-year LC rate was 85 and 72 %, respectively. On univariate analysis, higher tumor grade was associated with worse OS (grade 3-4, 27 % vs grade 2, 82 %, p = 0.04). Seven patients (27 %) had distant tumor progression and two patients (8 %) had symptomatic radiation necrosis after SRS. SRS for recurrent intracranial ependymoma provided good LC and may improve survival for patients with limited recurrent disease after prior treatment.


Asunto(s)
Ependimoma/mortalidad , Ependimoma/cirugía , Recurrencia Local de Neoplasia/mortalidad , Recurrencia Local de Neoplasia/cirugía , Radiocirugia , Adolescente , Adulto , Anciano , Neoplasias Encefálicas/mortalidad , Neoplasias Encefálicas/cirugía , Niño , Preescolar , Progresión de la Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Lactante , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Estudios Retrospectivos , Tasa de Supervivencia , Factores de Tiempo , Adulto Joven
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