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Activated brown fat (aBAT) is known to affect the evaluation of 18F-FDG PET scans, especially in young patients. The aim of this study was to determine factors influencing the occurrence of aBAT, and to investigate the effectiveness of the two preventive measures, warming and beta-blocker (propranolol) administration. Five-hundred-twenty-eight 18F-FDG-PET scans of 241 EuroNet-PHL-C2 trial patients from 41 nuclear medicine departments in Germany and Czech Republic were screened for aBAT. The occurrence of aBAT was analyzed with patient characteristics (age, sex, body mass index, predisposition to aBAT), weather data at the day of 18F-FDG PET scanning as well as the preventive measures taken. Potentially important factors from univariate analyses were included into a logistic regression model. Warming as a preventive measure was used in 243 18F-FDG-PET scans, propranolol was administered in 36, warming and propranolol were combined in 84, and no preventive measures were taken in 165 scans. Whereas age, sex and body mass index had no clear impact, there was an individual predisposition to aBAT. Logistic regression model revealed that the frequency of aBAT mainly depends on the outside temperature (p = 0.005) and can be effectively reduced by warming (p = 0.004), the administration of unselective beta-blocker or the combination of both. Warming is a simple, cheap and non-invasive method to reduce the frequency of aBAT. However, the effect of warming decreases with increasing outside temperatures. Administration of propranolol seems to be equally effective and provides advantages whenever the positive effect of warming is compromised. The combination of both preventive measures could have an additive effect.
Assuntos
Fluordesoxiglucose F18 , Linfoma , Humanos , Tecido Adiposo Marrom/diagnóstico por imagem , Antagonistas Adrenérgicos beta/farmacologia , Fluordesoxiglucose F18/farmacologia , Tomografia por Emissão de Pósitrons/métodos , Propranolol/farmacologia , Compostos Radiofarmacêuticos/farmacologiaRESUMO
INTRODUCTION: The diagnosis and management of periprosthetic knee and hip infections as well as the identification and management of possible additional infectious foci is of great importance for successful therapy. This study analyses the importance of 18F deoxyglucose PET-CT (PET-CT) in the identification of additional infectious focus and subsequent impact on management of periprosthetic infection (PPI). MATERIAL AND METHODS: A retrospective analysis of the clinical data and findings in the period from January 2008 to December 2018 was carried out. One hundred and four patients with in-hospital treatment due to PPI of a hip or knee joint were identified and included in this study. All patients underwent a standardized clinical examination and further surgical and antibiotic therapy. The reevaluation of performed PET-CTs was specifically carried out with regard to the local PPI or detection of secondary foci. RESULTS: PET-CT successfully verified the PPI in 84.2% of the patients. A total of 78 possible additional foci were detected in PET-CT in 56 (53.8%) of the examined patients. Predilection sites for possible secondary foci were joints (42.3%), pulmonary (15.4%), ear-nose-throat (15.4%), spine (11.5%), and the musculocutaneous tissues (11.5%). Fifty-four positive PET-CT findings were confirmed clinically with need of additional adequate treatment. CONCLUSION: PET-CT is a valuable diagnostic tool to confirm periprosthetic joint infection. At the same time, the whole-body PET/CT may detect additional foci of infection with impact on subsequent treatment strategy. PET was of special value in detecting infections at distant locations far from the primary infected joint in significant number. These distant infection locations can be potential cause of a re-infection. This clearly reflects the need of their diagnosis.
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Artroplastia de Quadril , Artroplastia do Joelho , Infecções Relacionadas à Prótese , Antibacterianos/uso terapêutico , Artroplastia de Quadril/efeitos adversos , Artroplastia do Joelho/efeitos adversos , Articulação do Quadril/diagnóstico por imagem , Articulação do Quadril/cirurgia , Humanos , Articulação do Joelho/diagnóstico por imagem , Articulação do Joelho/cirurgia , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Infecções Relacionadas à Prótese/diagnóstico por imagem , Infecções Relacionadas à Prótese/terapia , Estudos RetrospectivosRESUMO
AIM: In 2015, the revised International Pediatric Non-Hodgkin Lymphoma Staging System was published. It mentions [18F]-FDG-PET/MRI as the latest method to perform whole-body imaging. However, supporting data are pending. Our aim was to investigate the performance of whole-body [18F]-FDG-PET/MRI in pediatric non-Hodgkin lymphoma patients by using a limited number of MRI sequences. MATERIALS AND METHODS: Ten pediatric patients with histologically proven non-Hodgkin lymphoma underwent whole-body [18F]-FDG-PET/MRI at staging. The retrospective analysis included three steps: First, [18F]-FDG-PET and MR scans were evaluated separately by a nuclear medicine physician and a pediatric radiologist. Nineteen nodal and two extranodal regions as well as six organs were checked for involvement. Second, discrepant findings were reviewed together in order to reach consensus. Third, [18F]-FDG-PET/MRI findings were correlated with the results of other clinical investigations. RESULTS: Of the 190 lymph node regions evaluated, four were rated controversial. Consensus was reached by considering metabolic, functional and morphologic information combined. Concordantly, [18F]-FDG-PET and MRI detected Waldeyer's ring involvement in two patients whose Waldeyer's ring was negative on clinical assessment. In four patients MRI showed pleural effusion. However, in only two of them an increased glucose metabolism as a reliable sign of pleural involvement was detectable. In six patients [18F]-FDG-PET and MRI detected skeletal lesions although bone marrow biopsy was positive in only one of them. CONCLUSION: Despite the small number of cases evaluated, whole-body [18F]-FDG-PET turned out to be a valuable tool for staging of pediatric non-Hodgkin lymphoma.
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Ceco , Laparoscopia , Salpingectomia , Ceco/lesões , Feminino , Humanos , Laparoscopia/efeitos adversos , Salpingectomia/efeitos adversosRESUMO
PURPOSE: In 2014, we published the qPET method to quantify fluorodeoxyglucose positron emission tomography (FDG-PET) responses. Analysis of the distribution of the quantified signals suggested that a clearly abnormal FDG-PET response corresponds to a visual Deauville score (vDS) of 5 and high qPET values ≥ 2. Evaluation in long-term outcome data is still pending. Therefore, we analyzed progression-free survival (PFS) by early FDG-PET response in a subset of the GPOH-HD2002 trial for pediatric Hodgkin lymphoma (PHL). PATIENTS/METHODS: Pairwise FDG-PET scans for initial staging and early response assessment after two cycles of chemotherapy were available in 93 PHL patients. vDS and qPET measurement were performed and related to PFS. RESULTS: Patients with a qPET value ≥ 2.0 or vDS of 5 had 5-year PFS rates of 44%, respectively 50%. Those with qPET values < 2.0 or vDS 1 to 4 had 5-year PFS rates of 90%, respectively 80%. The positive predictive value of FDG-PET response assessment increased from 18% (9%; 33%) using a qPET threshold of 0.95 (vDS ≤ 3) to 30% (13%; 54%) for a qPET threshold of 1.3 (vDS ≤ 4) and to 56% (23%; 85%) when the qPET threshold was ≥ 2.0 (vDS 5). The negative predictive values remained stable at ≥92% (CI: 82%; 98%). CONCLUSION: Only strongly enhanced residual FDG uptake in early response PET (vDS 5 or qPET ≥ 2, respectively) seems to be markedly prognostic in PHL when treatment according to the GPOH-HD-2002 protocol is given.
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Fluordesoxiglucose F18/metabolismo , Doença de Hodgkin/patologia , Tomografia por Emissão de Pósitrons/métodos , Compostos Radiofarmacêuticos/metabolismo , Criança , Ensaios Clínicos como Assunto , Feminino , Seguimentos , Doença de Hodgkin/diagnóstico por imagem , Doença de Hodgkin/tratamento farmacológico , Doença de Hodgkin/metabolismo , Humanos , Masculino , Prognóstico , Curva ROC , Taxa de SobrevidaRESUMO
Objective: The diagnosis of cancer in pregnancy is rare, but might become more relevant even for head and neck cancer patients due to a shift of age of primipara towards the last third of reproductive years. Unsureness exists about the risk and benefit of diagnostic and therapeutic cancer modalities for the unborn and established recommendations are still missing. But, according to recent data, even multimodal therapeutic approaches (e. g. surgery, radiation, chemotherapy) seem possible in face of pregnancy and should be traded against the risk of prematurity. Material and Methods: Our findings are discussed on the basis of a case report of a pregnant woman with advanced carcinoma of the outer ear canal and therapy options are formulated. Results: Sufficient performed diagnostic modalities do not reach imperilling uterus dosages. A growing number of case reports und studies did not detect any developmental disadvantage of children of prenatal exposed mothers by radiation or chemotherapy, whereas long-term impairments of premature infants are proven. Conclusion: In cancer in pregnancy, an immediate start of well-established therapy modalities like surgery and/or cisplatin-based chemoradiation seems to be possible without unjustifiable risks for the unborn.
Assuntos
Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/terapia , Neoplasias Otorrinolaringológicas/diagnóstico , Neoplasias Otorrinolaringológicas/terapia , Complicações Neoplásicas na Gravidez/diagnóstico , Complicações Neoplásicas na Gravidez/terapia , Adulto , Carcinoma de Células Escamosas/patologia , Quimiorradioterapia Adjuvante/efeitos adversos , Cisplatino/administração & dosagem , Cisplatino/efeitos adversos , Terapia Combinada/efeitos adversos , Diagnóstico Diferencial , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Imageamento por Ressonância Magnética , Estadiamento de Neoplasias , Neoplasias Otorrinolaringológicas/patologia , Osso Petroso/patologia , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Gravidez , Complicações Neoplásicas na Gravidez/patologia , Dosagem Radioterapêutica , Risco , Tomografia Computadorizada por Raios XRESUMO
OBJECTIVES: Previous non-simultaneous PET/MR studies have shown heterogeneous results about the correlation between standardized uptake values (SUVs) and apparent diffusion coefficients (ADCs). The aim of this study was to investigate correlations in patients with primary and recurrent tumors using a simultaneous PET/MRI system which could lead to a better understanding of tumor biology and might play a role in early response assessment. METHODS: We included 31 patients with histologically confirmed primary (n = 14) or recurrent cervical cancer (n = 17) who underwent simultaneous whole-body 18F-FDG-PET/MRI comprising DWI. Image analysis was performed by a radiologist and a nuclear physician who identified tumor margins and quantified ADC and SUV. Pearson correlations were calculated to investigate the association between ADC and SUV. RESULTS: 92 lesions were detected. We found a significant inverse correlation between SUVmax and ADCmin (r = -0.532, p = 0.05) in primary tumors as well as in primary metastases (r = -0.362, p = 0.05) and between SUVmean and ADCmin (r = -0.403, p = 0.03). In recurrent local tumors we found correlations for SUVmax and ADCmin (r = -0.747, p = 0.002) and SUVmean and ADCmin (r = -0.773, p = 0.001). Associations for recurrent metastases were not significant (p>0.05). CONCLUSIONS: Our study demonstrates the feasibility of fast and reliable measurement of SUV and ADC with simultaneous PET/MRI. In patients with cervical cancer we found significant inverse correlations for SUV and ADC which could play a major role for further tumor characterization and therapy decisions.
Assuntos
Imagem de Difusão por Ressonância Magnética/métodos , Imagem Multimodal/métodos , Recidiva Local de Neoplasia/diagnóstico por imagem , Recidiva Local de Neoplasia/diagnóstico , Tomografia por Emissão de Pósitrons/métodos , Neoplasias do Colo do Útero/diagnóstico por imagem , Neoplasias do Colo do Útero/diagnóstico , Adulto , Idoso , Feminino , Fluordesoxiglucose F18 , Humanos , Processamento de Imagem Assistida por Computador , Pessoa de Meia-Idade , Estudos Prospectivos , Compostos RadiofarmacêuticosRESUMO
Nodular lymphocyte-predominant Hodgkin lymphoma (nLPHL) is a very rare disease in childhood and adolescence. In Germany, about 15 newly diagnosed patients present with this disease annually; this number comprises less than 10% of all pediatric Hodgkin lymphoma cases. Since the EuroNet-PHL-LP1 trial for early stage nLPHL patients stopped recruiting in Germany in October 2014, the GPOH-HD writing committee reviewed the literature and decided to deliver treatment recommendations for childhood and adolescent nLPHL patients. These guidelines shall be applicable to young nLPHL patients in European countries that will no longer be able to participate in nLPHL trials for young patients. Therefore, the EuroNet-PHL-nLPHL-registry will be installed to provide quality assured central review of staging and response assessment for registered patients by the Central Review Board of EuroNet-PHL in Halle/Leipzig, Germany.
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Consenso , Fidelidade a Diretrizes , Doença de Hodgkin/tratamento farmacológico , Adolescente , Criança , Europa (Continente) , Alemanha , Doença de Hodgkin/diagnóstico , Doença de Hodgkin/patologia , Humanos , Estadiamento de Neoplasias , Garantia da Qualidade dos Cuidados de SaúdeRESUMO
Across all cultures and over all time periods, as early as the third millennium BC, indigo, a very intense blue vat dye, has been used to dye textiles. Even today, indigo is regarded as one of the most popular blue colorants in items such as blue jeans. While synthetic indigo is used to color textiles today, throughout history, a variety of plants have provided indigo. In this special feature article, René Csuk and co-authors propose to use atmospheric solids analysis probe mass spectrometry (ASAP-MS) to very rapidly and reliably identify indigo colorants tiny amounts in ancient historic fabrics without any sample preparation. The ionization in ASAP experiments is effected by Penning ionization or by the transfer of protons originating from protonated clusters of water. Dr. René Csuk is Professor of organic bioorganic chemistry at the Martin-Luther Universität Halle-Wittenberg (Halle, Germany). His main research interests are in organic and medicinal chemistry, chemical biology and phytochemistry. Graphical Abstract: Historical samples can be investigated conveniently using ASAP®-MS experiments. ASAP®-MS allowed for rapid direct sampling without any preparation of the sample prior to its measurements, and reliable results were generated in less than 1 minute. As demonstrated for indigoid-type dyes, the efficacy of ASAP®-MS analysis is independent of the type of fiber, the age of the sample, the workmanship, and the state of preservation.
RESUMO
BACKGROUND: Neonates with blistering skin diseases are dermatologic emergencies. The pathologies involved can pose diagnostic difficulties and there exists a variety of potential life-threatening differential diagnoses. OBJECTIVE: description of the first case of intrauterine acquired herpes simplex virus (HSV) 1 infection in twins. METHODS: We present the case of two premature bicordial biamniotic twins (27th week of gestation) whose intrauterine growth retardation, fetal anaemia and cardiotocography abnormalities led to a caesarean emergency delivery. RESULTS: Accurate medical history revealed a maternal febrile gingivostomatitis at the 23rd week of gestation, which was neglected by the treating gynaecologist. Respiratory distress was present at delivery and intubation was necessary in both children. The whole skin showed extensive erosions and ulcerations and the mucosa of the eyes and genitals was also involved. Intrauterine Herpes simplex virus (HSV) 1 infection was confirmed by immunohistochemistry of skin Tzanck smear (HSV 1 positive, HSV 2 negative), real-time polymerase chain reaction of both serum and skin (HSV 1 positive; HSV 2 negative) and maternal serology positive for HSV 1 IgM and IgG. Siblings were immediately treated with high-dose endovenous acyclovir. Anaemia thrombocytopenia and hepatorenal values markedly deteriorated and both developed consequential hepatorenal failure. The third day live supportive measures were terminated after parental informed consent and both siblings deceased shortly after on their mother's breast. DISCUSSION: Intrauterine HSV infection is rare and accounts only for 5% of neonatal HSV infections. Literature reports only 64 cases and 90% of those are related to HSV-2. Transplacental viral transmission is highest during the first 20 weeks of gestation and has been observed in pregnant women with disseminated HSV infection. Mortality and morbidity of intrauterine herpetic infection are extremely high. CONCLUSION: Despite transplacental HSV transmission remains a rare event, the potential devastating outcome justifies immediate adequate antiviral treatment in a pregnant woman affected by primary HSV infection.
Assuntos
Doenças em Gêmeos/virologia , Herpes Simples/transmissão , Herpesvirus Humano 1 , Transmissão Vertical de Doenças Infecciosas , Complicações Infecciosas na Gravidez/diagnóstico , Dermatopatias Virais/congênito , Adulto , Doenças em Gêmeos/congênito , Evolução Fatal , Feminino , Herpes Simples/congênito , Herpes Simples/patologia , Humanos , Lactente , Recém-Nascido , Masculino , Morte Perinatal , Gravidez , Gravidez de Gêmeos , Nascimento Prematuro , Dermatopatias Virais/patologiaAssuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Doença de Hodgkin/tratamento farmacológico , Doença de Hodgkin/radioterapia , Radioterapia Adjuvante , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Bleomicina/administração & dosagem , Criança , Terapia Combinada , Dacarbazina/administração & dosagem , Doxorrubicina/administração & dosagem , Fluordesoxiglucose F18 , Seguimentos , Doença de Hodgkin/mortalidade , Doença de Hodgkin/patologia , Humanos , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/prevenção & controle , Estadiamento de Neoplasias , Neoplasias Induzidas por Radiação/etiologia , Neoplasias Induzidas por Radiação/prevenção & controle , Segunda Neoplasia Primária/etiologia , Segunda Neoplasia Primária/prevenção & controle , Tomografia por Emissão de Pósitrons , Lesões por Radiação/etiologia , Fatores de Risco , Taxa de Sobrevida , Vimblastina/administração & dosagem , Adulto JovemAssuntos
Antineoplásicos/efeitos adversos , Toxidermias/etiologia , Hidradenite Supurativa/induzido quimicamente , Dermatoses da Perna/induzido quimicamente , Niacinamida/análogos & derivados , Compostos de Fenilureia/efeitos adversos , Inibidores de Proteínas Quinases/efeitos adversos , Idoso , Humanos , Masculino , Niacinamida/efeitos adversos , SorafenibeRESUMO
PURPOSE: The aim of this study was to evaluate the diagnostic capability of simultaneous (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/MRI compared to (18)F-FDG PET/CT as well as their single components in head and neck cancer patients. METHODS: In a prospective study 17 patients underwent (18)F-FDG PET/CT for staging or follow-up and an additional (18)F-FDG PET/MRI scan with whole-body imaging and dedicated examination of the neck. MRI, CT and PET images as well as PET/MRI and PET/CT examinations were evaluated independently and in a blinded fashion by two reader groups. Results were compared with the reference standard (final diagnosis determined in consensus using all available data including histology and follow-up). Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were calculated. RESULTS: A total of 23 malignant tumours were found with the reference standard. PET/CT showed a sensitivity of 82.7%, a specificity of 87.3%, a PPV of 73.2% and a NPV of 92.4%. Corresponding values for PET/MRI were 80.5, 88.2, 75.6 and 92.5%. No statistically significant difference in diagnostic capability could be found between PET/CT and PET/MRI. Evaluation of the PET part from PET/CT revealed highest sensitivity of 95.7%, and MRI showed best specificity of 96.4%. There was a high inter-rater agreement in all modalities (Cohen's kappa 0.61-0.82). CONCLUSION: PET/MRI of patients with head and neck cancer yielded good diagnostic capability, similar to PET/CT. Further studies on larger cohorts to prove these first results seem justified.
Assuntos
Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Imageamento por Ressonância Magnética , Imagem Multimodal , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Adulto , Idoso , Feminino , Fluordesoxiglucose F18 , Neoplasias de Cabeça e Pescoço/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Compostos RadiofarmacêuticosRESUMO
Since 2007, children and adolescents with Hodgkin lymphomas are treated in the Europe-wide EuroNet-PHL trials. A real time central review process for stratification of the patients enhances quality control and efficient therapy management. This process includes reading of all cross-sectional-images. Since reference evaluation is time critical, a fast, easy to handle and safe data transfer is important. In addition, immediate and constant access to all the data has to be guaranteed in case of queries and for regulatory reasons. To meet the mentioned requirements the EuroNet Paediatric Hodgkin Data Network (funded by the European Union - Project Number: 2007108) was established between 2008 and 2011. A respective tailored data protection plan was formulated. The aim of this article is to describe the networks' mode of operation and the advantages for multi-centre trials that include centralized image review.
Assuntos
Ensaios Clínicos como Assunto/estatística & dados numéricos , Redes de Comunicação de Computadores/organização & administração , Sistemas de Gerenciamento de Base de Dados/organização & administração , Diagnóstico por Imagem , União Europeia , Doença de Hodgkin/terapia , Estudos Multicêntricos como Assunto/estatística & dados numéricos , Sistemas de Informação em Radiologia/organização & administração , Adolescente , Criança , Segurança Computacional , Coleta de Dados , Europa (Continente) , Humanos , Controle de QualidadeRESUMO
In several rodent strains such as the New Zealand Obese (NZO) mouse, the incidence of obesity-associated diabetes mellitus is much higher in males than in females. In the present study, we investigated the effects of ovariectomy on glucose homeostasis in female NZO mice in order to elucidate the mechanism of their diabetes resistance. NZO females were ovariectomized at the age of 4 weeks, received a high-fat diet and body weight, body fat, glucose and insulin tolerance were investigated in comparison to sham-operated mice. In a second experiment, operated mice were fed a carbohydrate-free diet up to the age of 19 weeks before they received the high-fat diet. In comparison with a sham-operated control group, ovariectomized female NZO mice exhibited similar body weights, a reduced glucose tolerance, developed significantly higher blood glucose levels, lost insulin producing ß-cells, which finally resulted in a diabetes prevalence of 73% at the age of 16 weeks vs. 25% in controls. Similar to male NZO mice, ovariectomized females presented a more severe insulin resistance in the insulin tolerance test than sham-operated controls. Furthermore, the more severe insulin resistance in ovariectomized mice preceded the development of diabetes and pancreatic insulin depletion that was caused by a dietary regimen of carbohydrate restriction and subsequent re-exposure. In summary our data demonstrate that estrogen protects NZO females from ß-cell loss and obesity-associated diabetes mellitus. This effect is due to a reduced insulin resistance and possibly also to a reduced sensitivity of ß-cells to glucolipotoxic conditions.
Assuntos
Diabetes Mellitus/metabolismo , Estrogênios/deficiência , Resistência à Insulina , Células Secretoras de Insulina/citologia , Animais , Peso Corporal , Morte Celular , Diabetes Mellitus/etiologia , Diabetes Mellitus/fisiopatologia , Feminino , Glucose/metabolismo , Humanos , Insulina , Células Secretoras de Insulina/metabolismo , Masculino , Camundongos , Camundongos Obesos , Obesidade/etiologia , Obesidade/metabolismo , Obesidade/fisiopatologia , Ovariectomia/efeitos adversosRESUMO
BACKGROUND: In adult cancer patients the negative predictive value of elevated CRP levels has been described for several malignancies. Only few studies have analyzed the prognostic role of CRP in children and adolescents with classical HL. In these studies elevated CRP levels correlate with the presence of classical risk factors and adverse outcome. PATIENTS AND METHODS: The prognostic role of CRP for patients with classical HL admitted to the GPOH-HD-2002 study was analyzed retrospectively. RESULTS: CRP levels were documented for 369 of 573 patients. Significant (p<0.05) increased median CRP levels were found in the presence of B-Symptoms (25.7 vs. 5.1 mg/l), extranodal involvement (21.5 vs. 7.5 mg/l), elevated erythrocyte sedimentation rate (ESR, 13.0 vs. 1.0 mg/l) and stage III/IV disease (15.5 vs. 5.3 mg/l). 83.9% of patients with elevated and 45.8% of patients with normal CRP had an ESR >30 mm/h. CONCLUSION: Elevated CRP levels were associated with classical risk factors of HL. CRP and ESR may reflect different biological processes. CRP was prognostic within early stage TG-1 patients treated with reduced treatment, but not within advanced stage TG-2+3.
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Biomarcadores Tumorais/sangue , Proteína C-Reativa/metabolismo , Doença de Hodgkin/sangue , Doença de Hodgkin/diagnóstico , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Sedimentação Sanguínea , Criança , Estudos de Coortes , Esquema de Medicação , Feminino , Seguimentos , Alemanha , Doença de Hodgkin/mortalidade , Doença de Hodgkin/patologia , Doença de Hodgkin/terapia , Humanos , Masculino , Estadiamento de Neoplasias , Prognóstico , Radioterapia Adjuvante , Estudos Retrospectivos , Fatores de Risco , Taxa de SobrevidaRESUMO
The paediatric Hodgkin lymphoma treatment optimisation concepts aim at reduction of treatment intensity with preservation of the high cure rates. A negative interim FDG-PET result after 2 cycles of chemotherapy is associated with a good prognosis. In the current EuroNet-PHL-C1 study radiotherapy is being omitted, if interim PET becomes negative. In addition to the early interim PET after 2 cycles of chemotherapy, all patients undergo an initial PET investigation which is part of the staging processs and plays an essential role for the interpretation of the interim PET. Skeletal involvement can be detected by a typical FDG-PET uptake pattern with high sensitivity and specifity. Therefore, in the forthcoming EuroNet-PHL-C2 study bone marrow biopsy and bone scintigraphy will no longer be part of the staging algorithm.
Assuntos
Fluordesoxiglucose F18 , Doença de Hodgkin/diagnóstico por imagem , Doença de Hodgkin/patologia , Tomografia por Emissão de Pósitrons , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Criança , Terapia Combinada , Medicina Baseada em Evidências , Doença de Hodgkin/tratamento farmacológico , Doença de Hodgkin/radioterapia , Humanos , Imageamento por Ressonância Magnética , Estadiamento de Neoplasias , Radioterapia Adjuvante , Tomografia Computadorizada por Raios X , Resultado do TratamentoRESUMO
Imaging diagnostics and surgical treatment of bone and joint infections are of paramount interest. The main purpose of our survey is to give a detailed overview about methods, indications, image criteria and efficiency of imaging diagnostics as a state of the art presentation. In conclusion we attempt to give some recommendations for clinical scenarios and diagnostic procedures concerning bone and joint infections. This paper has been prepared under the patronage of the AG Septische Chirurgie of the Deutsche Gesellschaft für Unfallchirurgie in Germany. It is our aim to update the paper with respect to the technical and clinical improvements and to publish it again after a number of years.
Assuntos
Artrite Infecciosa/diagnóstico , Diagnóstico por Imagem/métodos , Aumento da Imagem/métodos , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos , Osteíte/diagnóstico , Osteomielite/diagnóstico , Abscesso/diagnóstico , Abscesso/cirurgia , Artrite Infecciosa/cirurgia , Fraturas Espontâneas/diagnóstico , Fraturas Espontâneas/cirurgia , Humanos , Prótese Articular , Imageamento por Ressonância Magnética/métodos , Osteíte/cirurgia , Osteomielite/cirurgia , Tomografia por Emissão de Pósitrons/métodos , Falha de Prótese , Sensibilidade e Especificidade , Tomografia Computadorizada de Emissão de Fóton Único/métodos , Tomografia Computadorizada por Raios X/métodos , Ultrassonografia/métodosRESUMO
BACKGROUND: Obesity and diabetes in mice can be modified by dietary variables. Here we systematically analysed the effect of the sucrose and fat content and of the fat quality in New Zealand Obese mice, a mouse model of the metabolic syndrome. RESULTS: Male NZO mice fed a semi-purified diet with sucrose exhibited an identical weight gain and diabetes incidence as controls without sucrose. In contrast, mice on a chow diet gained weight more slowly and developed diabetes approximately 10 weeks later than those on the semi-purified diet (energy density 3.05 vs. 3.85 kcal/g; fibre content 12.9 vs. 4.7%). In a second experimental series, neither the fat content (10 vs. 40% of the total energy) nor the quality of the fat (lard, safflower oil, or fish oil) of semi-purified diets modified weight gain. However, diabetes started approximately 2 weeks earlier and appeared more severe (blood glucose 30 vs. 20 mmol/l at week 13) in the high-fat diet group (energy density 4.58 kcal/g; fibre content 5.7%). CONCLUSIONS: Obesity in NZO mice develops independent of the dietary sucrose or fat content, and of the fat quality. However, the dietary fat content accelerates the onset of diabetes without enhancing adiposity. In contrast, chow diet exerts an anti-adipogenic/anti-diabetogenic effect that appears to be due to its lower caloric density and/or its higher fibre content.