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1.
Thromb J ; 21(1): 124, 2023 Dec 14.
Artículo en Inglés | MEDLINE | ID: mdl-38098072

RESUMEN

BACKGROUND: Optimising periprocedural management of direct oral anticoagulation in patients with atrial fibrillation on chronic treatment undergoing major surgeries is an important aspect of balancing the risk of surgery-related bleeding with the risk of thromboembolic events, which may vary by surgery type. METHODS: This subanalysis of the prospective EMIT-AF/VTE programme assessed periprocedural-edoxaban management, according to physicians' decisions, and bleeding and thromboembolic event rates in patients who underwent major vs. nonmajor surgeries. Edoxaban interruption and clinical outcomes were compared between major vs. nonmajor surgeries and between renal function subgroups (creatinine clearance [CrCL] ≤ 50 mL/min vs. > 50 mL/min). RESULTS: We included 276 major and 512 nonmajor surgeries. The median pre- and postprocedural duration of edoxaban interruption in major vs. nonmajor surgeries was 4 vs. 1 days, whereas median duration of interruption for those with preprocedural-only and postprocedural-only interruption was 2 vs. 1 days and 2 vs. 0 days, respectively (P < 0.0001). Rates of all bleeding and clinically relevant nonmajor bleeding were numerically higher in major vs. nonmajor surgeries. Event rates (number of events per 100 surgeries) were low overall (< 6 events per 100 surgeries), independent of renal function subgroups. CONCLUSION: In this subanalysis of the EMIT-AF/VTE programme, periprocedural-edoxaban interruption was significantly longer in patients undergoing major vs. nonmajor surgery. This clinician-driven approach was associated with low rates of bleeding and thromboembolic events following both major and nonmajor surgeries. TRIAL REGISTRATION: NCT02950168, registered October 31, 2016; NCT02951039, registered November 1, 2016.

2.
Nervenarzt ; 94(7): 619-624, 2023 Jul.
Artículo en Alemán | MEDLINE | ID: mdl-37138091

RESUMEN

BACKGROUND: Severe mental illnesses are risk factors for SARS-CoV-2-related morbidity and mortality. Vaccination is an effective protection; therefore, high vaccination rates should be a major priority for people with mental illnesses. OBJECTIVES: (1) Identification of at-risk groups for non-vaccination and structures and interventions needed for widespread vaccination among people with mental illnesses from the perspective of outpatient psychiatrists and neurologists, (2) discussion of the results in the context of the international literature and (3) recommendations derived from them. MATERIAL AND METHODS: Qualitative content analysis of COVID-19 vaccination-related questions from the COVID Ψ online survey of n = 85 psychiatrists and neurologists in Germany. RESULTS: In the survey, people with schizophrenia, severe lack of drive, low socioeconomic status and homelessness were seen as risk groups for non-vaccination. Increased and targeted information, education, addressing and motivation and easily accessible vaccination offers by general practitioners, psychiatrists, and neurologists as well as complementary institutions were considered as important interventions. DISCUSSION: COVID-19 vaccinations as well as information, motivation and access support should be systematically offered by as many institutions of the psychiatric, psychotherapeutic and complementary care systems in Germany as possible.


Asunto(s)
COVID-19 , Trastornos Mentales , Psiquiatría , Humanos , Vacunas contra la COVID-19 , SARS-CoV-2 , COVID-19/epidemiología , COVID-19/prevención & control , Pacientes Ambulatorios , Trastornos Mentales/epidemiología
4.
BDJ Open ; 9(1): 38, 2023 Aug 14.
Artículo en Inglés | MEDLINE | ID: mdl-37580338

RESUMEN

INTRODUCTION: Literature reviews support continuing anticoagulation during dental procedures. However, studies often present grouped anticoagulation data, and information on individual anticoagulant management would be helpful to dentists. The Edoxaban Management in Diagnostic and Therapeutic Procedures (EMIT-AF/VTE) programme (NCT02950168; NCT02951039) demonstrated low periprocedural bleeding and thrombotic event rates in patients with atrial fibrillation receiving edoxaban. AIMS: To report periprocedural edoxaban interruption and clinical events in patients from EMIT-AF/VTE who underwent dental procedures. METHODS: Dental procedures were categorised by type (cleaning/noncleaning). Edoxaban interruption, bleeding events, and thrombotic events were observed 5 days preprocedure through 29 days postprocedure. RESULTS: Overall, 196 patients underwent 350 cleaning and/or noncleaning procedures; most patients (171/196 [87.2%]) underwent noncleaning procedures (282/350 [80.6%]), whereas 48/196 (24.5%) underwent 68/350 (19.4%) cleaning procedures. Edoxaban was uninterrupted for most cleanings (53/68 [77.9%]). Preprocedural interruption was common for single and multiple tooth extractions (single, 67/100 [67.0%]; multiple, 16/30 [53.3%]). The only major bleeding occurred after an unrelated cleaning. Minor bleeding occurred in 1/68 (1.5%) cleaning and 4/282 (1.4%) noncleaning procedures. There were no thrombotic events. CONCLUSIONS: For most cleanings, edoxaban was not interrupted, whereas preprocedural interruption was more common for tooth extractions. Overall, bleeding rates were low, and no thrombotic events occurred.

5.
Dtsch Arztebl Int ; 119(24): 418-414, 2022 06 17.
Artículo en Inglés | MEDLINE | ID: mdl-35506265

RESUMEN

BACKGROUND: Persons with intellectual disability (ID) often suffer from significant comorbidities. As data have been lacking until now, the present report is the first one containing outpatient data on the prevalence of ID in Germany, its comorbidities, and outpatient (drug) treatment. METHODS: This study is based on the nationwide outpatient billing data and drug prescription data of all SHI-insured adults (SHI, statutory health insurance) (age 18-109) who were seen at least once in an outpatient medical practice in 2018. Patients with at least two F70-F79 diagnoses in two quarters were included in the study group (SG) (n = 324 428). A random sample of patients without ID served as the control/comparison group (CG) (n = 648 856). The odds ratios (SG vs. CG) for comorbidities, prescriptions of selected classes of drugs, and involvement of medical specialties were each analyzed by multivariate logistic regression. RESULTS: The prevalence of ID was 0.55%. ID was found to be associated with a variety of comorbidities. The highest odds ratios [OR] were for infantile cerebral palsy (OR: 121.71; 95% confidence interval: [111.67; 132.67]), autism spectrum disorders (OR: 83.85 [75.54; 93.08]), and developmental disabilities (OR: 61.34 [58.86; 63.94]). The most frequently prescribed drug categories (as classified by the anatomic-therapeutic-chemical (ATC) convention) were psychoactive drugs (antipsychotic, anxiolytic, and hypnotic drugs and sedatives) and antiepileptic drugs (OR: 10.40 [10.27; 10.53] and 9.90 [9.75; 10.05], respectively). Both general practitioners (OR: 2.64 [2.59; 2.69]) and medical specialists were consulted by the SG more frequently than by the CG; the type of specialist most commonly consulted was in the neuropsychiatric field, i.e., a neurologist or psychiatrist (OR: 6.85 [6.77; 6.92]). CONCLUSION: A diagnosis of ID frequently appears in outpatient billing data. Future analyses should be devoted to the specific care of people with intellectual disability, who constitute an especially multimorbid and vulnerable patient group.


Asunto(s)
Ansiolíticos , Antipsicóticos , Discapacidad Intelectual , Personas con Discapacidades Mentales , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Ansiolíticos/uso terapéutico , Anticonvulsivantes/uso terapéutico , Antipsicóticos/uso terapéutico , Humanos , Hipnóticos y Sedantes/uso terapéutico , Discapacidad Intelectual/epidemiología , Discapacidad Intelectual/terapia , Persona de Mediana Edad , Psicotrópicos/uso terapéutico , Adulto Joven
6.
Eur Arch Psychiatry Clin Neurosci ; 261(3): 213-6, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-20872228

RESUMEN

Studies using diffusion tensor imaging (DTI) have shown multifocal reduction in anisotropy of white matter fibre tracts in schizophrenia, and a few of these also suggest changes in apparent diffusion coefficient (ADC). In this study, we assessed ADC in 18 patients with schizophrenia and 18 healthy controls using a voxel-based approach. We did not find evidence of statistically significant changes in ADC in either direction at P < 0.05 (FDR corrected) using different smoothing filter sizes; only at an uncorrected threshold of P < 0.001 did we find an increase in a small right prefrontal area close to our previous FA finding. Our findings therefore do not support ADC changes to be a marker of white matter or grey matter abnormalities in schizophrenia. Changes in other parameters like fractional anisotropy (FA) might be a more sensitive indicator of white matter pathology in this disorder.


Asunto(s)
Mapeo Encefálico , Encéfalo/patología , Imagen de Difusión Tensora/métodos , Esquizofrenia/patología , Adulto , Anisotropía , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Masculino , Adulto Joven
7.
Blood Adv ; 5(22): 4752-4761, 2021 11 23.
Artículo en Inglés | MEDLINE | ID: mdl-34535016

RESUMEN

Prediction of resistant disease at initial diagnosis of acute myeloid leukemia (AML) can be achieved with high accuracy using cytogenetic data and 29 gene expression markers (Predictive Score 29 Medical Research Council; PS29MRC). Our aim was to establish PS29MRC as a clinically usable assay by using the widely implemented NanoString platform and further validate the classifier in a more recently treated patient cohort. Analyses were performed on 351 patients with newly diagnosed AML intensively treated within the German AML Cooperative Group registry. As a continuous variable, PS29MRC performed best in predicting induction failure in comparison with previously published risk models. The classifier was strongly associated with overall survival. We were able to establish a previously defined cutoff that allows classifier dichotomization (PS29MRCdic). PS29MRCdic significantly identified induction failure with 59% sensitivity, 77% specificity, and 72% overall accuracy (odds ratio, 4.81; P = 4.15 × 10-10). PS29MRCdic was able to improve the European Leukemia Network 2017 (ELN-2017) risk classification within every category. The median overall survival with high PS29MRCdic was 1.8 years compared with 4.3 years for low-risk patients. In multivariate analysis including ELN-2017 and clinical and genetic markers, only age and PS29MRCdic were independent predictors of refractory disease. In patients aged ≥60 years, only PS29MRCdic remained as a significant variable. In summary, we confirmed PS29MRC as a valuable classifier to identify high-risk patients with AML. Risk classification can still be refined beyond ELN-2017, and predictive classifiers might facilitate clinical trials focusing on these high-risk patients with AML.


Asunto(s)
Leucemia Mieloide Aguda , Estudios de Cohortes , Citogenética , Expresión Génica , Humanos , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/tratamiento farmacológico , Leucemia Mieloide Aguda/genética , Pronóstico
8.
Psychiatr Prax ; 47(4): 214-217, 2020 May.
Artículo en Alemán | MEDLINE | ID: mdl-32340050

RESUMEN

AIM: To date, to our knowledge there are no studies regarding attitudes and experiences of outpatient medical personnel during a pandemic. This study's aim was to evaluate the impact of the COVID-19 pandemic in March 2020 on German psychiatrists and neurologists. METHODS: An e-mail and fax-based short survey of 2,072 practice-based psychiatrists and neurologists was performed including Likert-type questions on personal burden and concerns, anticipated risk of infection, practice management as well as anxiety and sleep problems. RESULTS: 396 physicians returned the questionnaire (19 %). More than 60 % of the participants felt restricted strongly or very strongly, more than 30 % were strongly and very strongly concerned. They anticipated a high own risk of infection. However, 91 % did not report any contact with patients positively screened for COVID-19, which they were aware of. One third felt financially threatened and loss of business volume was anticipated. 18 % reported, that the pandemic triggers substantial anxiety. Sleep problems, which occur at least almost every night, were rarely reported (9 %). CONCLUSION: Practice-based psychiatrists and neurologists are negatively affected by the COVID-19 pandemic.


Asunto(s)
Infecciones por Coronavirus/psicología , Neurólogos/psicología , Neumonía Viral/psicología , Gestión de la Práctica Profesional , Psiquiatría , Betacoronavirus , COVID-19 , Alemania , Humanos , Renta , Control de Infecciones , Transmisión de Enfermedad Infecciosa de Paciente a Profesional , Pandemias , SARS-CoV-2 , Encuestas y Cuestionarios
10.
World Psychiatry ; 18(1): 3-19, 2019 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-30600616

RESUMEN

Following approval of the ICD-11 by the World Health Assembly in May 2019, World Health Organization (WHO) member states will transition from the ICD-10 to the ICD-11, with reporting of health statistics based on the new system to begin on January 1, 2022. The WHO Department of Mental Health and Substance Abuse will publish Clinical Descriptions and Diagnostic Guidelines (CDDG) for ICD-11 Mental, Behavioural and Neurodevelopmental Disorders following ICD-11's approval. The development of the ICD-11 CDDG over the past decade, based on the principles of clinical utility and global applicability, has been the most broadly international, multilingual, multidisciplinary and participative revision process ever implemented for a classification of mental disorders. Innovations in the ICD-11 include the provision of consistent and systematically characterized information, the adoption of a lifespan approach, and culture-related guidance for each disorder. Dimensional approaches have been incorporated into the classification, particularly for personality disorders and primary psychotic disorders, in ways that are consistent with current evidence, are more compatible with recovery-based approaches, eliminate artificial comorbidity, and more effectively capture changes over time. Here we describe major changes to the structure of the ICD-11 classification of mental disorders as compared to the ICD-10, and the development of two new ICD-11 chapters relevant to mental health practice. We illustrate a set of new categories that have been added to the ICD-11 and present the rationale for their inclusion. Finally, we provide a description of the important changes that have been made in each ICD-11 disorder grouping. This information is intended to be useful for both clinicians and researchers in orienting themselves to the ICD-11 and in preparing for implementation in their own professional contexts.

11.
J Am Acad Dermatol ; 58(4): 661-4, 2008 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-17945384

RESUMEN

Palisaded neutrophilic and granulomatous dermatitis (PNGD) is a condition that is characterized histopathologically by a characteristic pattern of granulomatous inflammation in the presence or absence of leukocytoclastic vasculitis. It has been associated with systemic diseases, especially autoimmune conditions such as rheumatoid arthritis and Behçet's disease. A 44-year-old woman with underlying limited systemic sclerosis presented with painful erythematous nodules located on her face and scalp. Histopathologic analysis confirmed a diagnosis of PNGD, which self-resolved within weeks of the biopsy. To our knowledge, this is the first report of a case of PNGD associated with systemic sclerosis. A review of the literature revealed that PNGD is a female-predominant disease that is most commonly associated with rheumatoid arthritis, followed closely by lupus erythematosus. Most patients with PNGD respond to treatment of the underlying systemic disease, although spontaneous resolution is not uncommonly observed.


Asunto(s)
Dermatosis Facial/complicaciones , Granuloma/complicaciones , Dermatosis del Cuero Cabelludo/complicaciones , Esclerodermia Sistémica/complicaciones , Adulto , Dermatosis Facial/patología , Femenino , Granuloma/patología , Humanos , Infiltración Neutrófila , Dermatosis del Cuero Cabelludo/patología
12.
J Am Acad Dermatol ; 58(4): 691-6, 2008 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-18342718

RESUMEN

We report the third case of eccrine syringofibroadenoma (ESFA) arising in peristomal skin. A 55-year-old man presented with a 15- x 10-cm pale pink verrucous, exophytic, intermittently tender plaque involving his ileostomy site. He had undergone proctocolectomy with ileostomy creation 33 years prior for ulcerative colitis. The clinical differential diagnosis included granulomatous dermatitis, infection (fungus or atypical mycobacterium), or neoplasm. A punch biopsy specimen was performed and showed ESFA. Although ESFA is considered to be benign, recent reports have demonstrated an association of ESFA with malignancy or malignant transformation of ESFA. Furthermore, ESFA and reported cases of ileostomy carcinoma share similar clinical symptoms at presentation including pain, irritation, ulceration, bleeding, and the presence of a fungating mass. The lesion was, therefore, excised in toto and the excisional specimen showed no evidence of malignancy. We speculate that ESFA is a reaction to chronic irritation and, analogous to other long-standing reactive processes such as lichen sclerosis or burn scar ulcers, may be associated with malignant transformation. Because of this possibility and the clinical overlap with ileostomy carcinoma, peristomal ESFA should be treated with complete excision. If it is not amenable to complete excision because of lesion size or anatomic complexity, generous sampling and close clinical follow-up are recommended.


Asunto(s)
Adenoma de las Glándulas Sudoríparas/patología , Glándulas Ecrinas/patología , Enterostomía/efectos adversos , Fibroadenoma/patología , Neoplasias de las Glándulas Sudoríparas/patología , Adenoma de las Glándulas Sudoríparas/cirugía , Fibroadenoma/cirugía , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Neoplasias de las Glándulas Sudoríparas/cirugía
13.
J Am Acad Dermatol ; 59(4): 706-12, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18550209

RESUMEN

Woringer-Kolopp disease, also known as pagetoid reticulosis, is an exceedingly rare variant of mycosis fungoides. Accurate diagnosis and effective treatment is essential to prevent progression to debilitating disease. We identified 7 patients with Woringer-Kolopp disease treated at our institution. We review the major clinical and pathologic characteristics of this disease, focusing on treatment strategies and patient outcomes. All of our patients were successfully treated with skin-directed therapies including topical steroids, topical nitrogen mustard, psoralen plus ultraviolet A, narrow-band ultraviolet B, and radiation therapy. Our observations confirm that Woringer-Kolopp disease carries an excellent prognosis, and support that the most effective and appropriate treatment for recalcitrant or severe Woringer-Kolopp disease is localized radiation therapy.


Asunto(s)
Micosis Fungoide/diagnóstico , Micosis Fungoide/patología , Recurrencia Local de Neoplasia/tratamiento farmacológico , Neoplasias Cutáneas/diagnóstico , Neoplasias Cutáneas/patología , Adolescente , Adulto , Anciano , Biopsia , Niño , Diagnóstico Diferencial , Femenino , Dermatosis de la Mano/diagnóstico , Humanos , Lactante , Masculino , Mecloretamina/administración & dosificación , Micosis Fungoide/tratamiento farmacológico , Micosis Fungoide/radioterapia , Recurrencia Local de Neoplasia/patología , Terapia PUVA , Fotones/uso terapéutico , Dosis de Radiación , Terapia Recuperativa , Piel/patología , Neoplasias Cutáneas/tratamiento farmacológico , Neoplasias Cutáneas/radioterapia , Resultado del Tratamiento
14.
Am J Dermatopathol ; 30(5): 425-30, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18806482

RESUMEN

Primary cutaneous B-cell lymphomas (CBCL) are a diverse group of lymphomas that are limited to the skin at the time of diagnosis. Recently, standardized polymerase chain reaction protocols for immunoglobulin (Ig) rearrangement in nodal malignancies using the BIOMED-2 method have been studied extensively. However, reports of investigations of Ig clonality in CBCL using the BIOMED-2 method have been scant. We hypothesized that clonality detection in CBCL with the BIOMED-2 method could effectively distinguish malignant from benign B-cell-rich infiltrates in the skin. Formalin-fixed tissue samples from 26 patients with CBCL and 23 with benign lymphoid infiltrates were analyzed for Ig clonality using standardized BIOMED-2 polymerase chain reaction protocols. The (14;18) translocation was also assessed. A clone was detected in 22 (85%) of the 26 patients with CBCL [12/15 (80%) marginal zone B-cell lymphoma; 10/11 (91%) follicle center lymphoma] and in 1 (4%) of the 23 patients with benign infiltrates. The (14;18) translocation was present in 3 (12%) of the 26 patients with CBCL [1/15 (7%) marginal zone B-cell lymphoma; 2/11 (18%) follicle center lymphoma]. Our preliminary data indicate that Ig clonality can be detected in formalin-fixed samples of CBCL with meaningful sensitivity (85%) and high specificity (96%) using the BIOMED-2 method. This study forms the basis for further investigating the role of Ig clonality in distinguishing CBCL from benign lymphoid infiltrates that may pose a challenge in morphologic diagnosis.


Asunto(s)
Linfocitos B/patología , Linfoma de Células B/diagnóstico , Reacción en Cadena de la Polimerasa/métodos , Enfermedades de la Piel/diagnóstico , Neoplasias Cutáneas/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Biopsia , Estudios de Casos y Controles , Proliferación Celular , Diagnóstico Diferencial , Femenino , Humanos , Cadenas Pesadas de Inmunoglobulina/genética , Cadenas kappa de Inmunoglobulina/genética , Linfoma de Células B/genética , Linfoma de Células B/patología , Masculino , Persona de Mediana Edad , Sensibilidad y Especificidad , Enfermedades de la Piel/genética , Enfermedades de la Piel/patología , Neoplasias Cutáneas/genética , Neoplasias Cutáneas/patología , Translocación Genética , Adulto Joven
15.
Arch Cardiovasc Dis ; 111(2): 74-84, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28942115

RESUMEN

BACKGROUND: Non-vitamin K antagonist oral anticoagulants (NOACs) are being introduced for stroke prevention in non-valvular Atrial Fibrillation (AF), and promise to be accepted better than Vitamin K Antagonists (VKAs) by patients, improving their Quality of Life (QoL). AIM: To assess to what extent patient-related factors influence decisions to switch from a VKA to a NOAC. METHODS: The PREFER in AF Registry collected data at baseline in 2012 - at the beginning of NOAC prescriptions - and at 1-year follow-up, in 6412 patients in seven Western European countries. QoL and patient satisfaction questionnaires (EQ-5D-5L and/or PACT-Q2) were completed in 3777 patients at both visits. Data were compared across categories of patients on stable treatment with a VKA (i.e. continuously over the previous 12 months) (n=2102) or recently switched (within 12 months) from a VKA to a NOAC (n=213) during a 1-year follow-up, allowing a snapshot of factors influencing the switch at a time when NOACs were being introduced into the market. RESULTS: Compared to patients on stable treatment with a VKA, switched patients were similar in terms of age, sex, body mass index and other risk factors, but had lower prevalences of hypertension and heart valve dysfunction, and a lower rate of use of concomitant treatment with antiplatelet/anti-inflammatory agents; they also had a lower CHA2DS2-VASc score. Among 25 features investigated, switched patients more often reported bruising or bleeding, complained about bruising, were dissatisfied with the anticoagulant treatment, and reported mobility problems and anxiety/depressive traits. CONCLUSIONS: At the beginning of NOAC prescriptions, European doctors tended to switch from VKAs to NOACs those patients at lower risk than "non-switchers". Complaints about bruising or bleeding, dissatisfaction with treatment, mobility problems and anxiety/depression traits appear to be related to - and may have influenced - the choice to switch from a VKA to a NOAC.


Asunto(s)
Anticoagulantes/administración & dosificación , Fibrilación Atrial/tratamiento farmacológico , Coagulación Sanguínea/efectos de los fármacos , Sustitución de Medicamentos , Satisfacción del Paciente , Calidad de Vida , Accidente Cerebrovascular/prevención & control , Vitamina K/antagonistas & inhibidores , Actividades Cotidianas , Administración Oral , Anciano , Anciano de 80 o más Años , Anticoagulantes/efectos adversos , Fibrilación Atrial/sangre , Fibrilación Atrial/complicaciones , Fibrilación Atrial/diagnóstico , Europa (Continente) , Femenino , Estudios de Seguimiento , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Sistema de Registros , Factores de Riesgo , Accidente Cerebrovascular/sangre , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/etiología , Encuestas y Cuestionarios , Factores de Tiempo , Resultado del Tratamiento
16.
Schizophr Res ; 89(1-3): 1-11, 2007 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-17085018

RESUMEN

Diffusion tensor imaging (DTI) studies of schizophrenia have revealed white matter abnormalities in several areas of the brain. The functional impact on either psychopathology or cognition remains, however, poorly understood. Here we analysed both functional MRI (during a working memory task) and DTI data sets in 18 patients with schizophrenia and 18 controls. Firstly, DTI analyses revealed reductions of fractional anisotropy (FA) in the right medial temporal lobe adjacent to the right parahippocampal gyrus, likely to contain fibres of the inferior cingulum bundle, and in the right frontal lobe. Secondly, functional MRI revealed prefrontal, superior parietal and occipital relative hypoactivation in patients with the main effect of task. This was accounted for by reduced prefrontal activation during the encoding phase of the task, but not during maintenance or retrieval phases. Thirdly, we found a direct correlation in patients between the frontal FA reduction (but not medial temporal reductions) and fMRI activation in regions in the prefrontal and occipital cortex. Our study combining fMRI and DTI thus demonstrates altered structure-function relationships in schizophrenia. It highlights a potential relationship between anatomical changes in a frontal-temporal anatomical circuit and functional alterations in the prefrontal cortex.


Asunto(s)
Nivel de Alerta/fisiología , Encéfalo/fisiopatología , Imagen de Difusión por Resonancia Magnética , Procesamiento de Imagen Asistido por Computador , Imagenología Tridimensional , Imagen por Resonancia Magnética , Memoria a Corto Plazo/fisiología , Fibras Nerviosas Mielínicas/fisiología , Esquizofrenia/fisiopatología , Psicología del Esquizofrénico , Aprendizaje Seriado/fisiología , Adulto , Anisotropía , Encéfalo/patología , Mapeo Encefálico , Corteza Cerebral/patología , Corteza Cerebral/fisiopatología , Dominancia Cerebral/fisiología , Femenino , Giro del Cíngulo/patología , Giro del Cíngulo/fisiopatología , Hipocampo/patología , Hipocampo/fisiopatología , Humanos , Masculino , Red Nerviosa/patología , Red Nerviosa/fisiopatología , Giro Parahipocampal/patología , Giro Parahipocampal/fisiopatología , Corteza Prefrontal/patología , Corteza Prefrontal/fisiopatología , Solución de Problemas/fisiología , Esquizofrenia/diagnóstico , Lóbulo Temporal/patología , Lóbulo Temporal/fisiopatología
17.
J Am Acad Dermatol ; 57(1): 126-33, 2007 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-17572278

RESUMEN

BACKGROUND: Post-radiotherapy atypical vascular lesions (AVL) in mammary skin show significant clinical and histopathologic overlap with well-differentiated angiosarcoma (AS) and pose a considerable diagnostic and managerial challenge when encountered. OBJECTIVE: We review Stanford's experience with diagnosing AVL and formulate a clinicopathologic approach to these lesions. METHODS: We performed a clinicopathologic study on 11 cases that were initially diagnosed as AVL and examined whether there are specific clinical or histopathologic features that delineate AVLs from well-differentiated AS. RESULTS: Clinically, all patients were women with a mean age of 68.1 years, had a history of infiltrating breast carcinoma, and were treated by excision with postoperative radiation therapy. All lesions were located in mammary skin within the prior radiation field. The clinical presentation included erythema, telangiectasias, papules, plaques, and nodules. All patients were diagnosed with AVL on initial biopsy. Six patients showed no recurrence or progression of disease following incomplete excision with no further therapy (3/6) or re-excision with negative margins (3/6). The remaining 5 patients were shown to have AS in the re-excision specimen. The patients diagnosed with AS were older and had a shorter interval from radiation as compared to those who did not experience an adverse outcome. Histologically, all initial biopsy specimens were transected and were characterized by complex, anastomosing vascular proliferations with dilated spaces. Each case was morphologically evaluated according to the AVL criteria of Fineberg and Rosen. Three cases met all of the criteria for AVL, and these patients showed no progression of disease. The remaining cases met most but not all diagnostic criteria for AVL and showed some features of AS, but fell short of a definitive diagnosis of AS, including the 5 cases that were subsequently diagnosed as angiosarcoma. LIMITATIONS: This retrospective study utilized a small number of cases from a single consultation service; therefore, some inherent selection bias may exist. CONCLUSION: We could not identify unequivocal clinical or histologic criteria that allows for a sharp separation between AVL and AS. Dermatologists and pathologists need to be aware of the overlap between AVL and well-differentiated AS and all patients who receive a diagnosis of AVL should undergo complete excision with close clinical follow-up and biopsy of any new lesions.


Asunto(s)
Neoplasias de la Mama/radioterapia , Hemangiosarcoma/diagnóstico , Neoplasias Inducidas por Radiación/etiología , Neoplasias Inducidas por Radiación/patología , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/patología , Enfermedades Vasculares/etiología , Enfermedades Vasculares/patología , Anciano , Neoplasias de la Mama/cirugía , Femenino , Hemangiosarcoma/patología , Humanos , Inmunohistoquímica , Persona de Mediana Edad , Estudios Retrospectivos
18.
J Am Acad Dermatol ; 57(5): 782-90, 2007 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-17646032

RESUMEN

BACKGROUND: The diagnosis of mycosis fungoides (MF) is often difficult because of significant clinical and histopathologic overlap with inflammatory dermatoses. T-cell receptor (TCR)gamma chain rearrangement by polymerase chain reaction (PCR) (TCR-PCR) is a helpful adjuvant tool in this setting, but several of the inflammatory dermatoses in the differential diagnosis of MF may contain a clonal T-cell proliferation. OBJECTIVE: We examined whether analysis for T-cell clonality and comparison of the clones with the standardized BIOMED-2 PCR multiplex primers for the TCRgamma chain from two anatomically distinct skin sites improves diagnostic accuracy. METHODS: We examined two biopsy specimens each from 10 patients with unequivocal MF, from 18 patients with inflammatory dermatoses, and from 18 patients who could initially not be definitively given a diagnosis based on clinical and histopathologic criteria. RESULTS: Eight of 10 patients with unequivocal MF had an identical clone in both biopsy specimens. Two of 18 patients with inflammatory dermatoses were found to have a clone in one of the biopsy specimens. On further follow-up of the 18 patients with morphologically nondiagnostic biopsy specimens, 13 of 18 were later confirmed to have MF and 5 of 18 had inflammatory dermatoses. Eleven of 13 patients with MF had an identical clone in both biopsy specimens; two of 13 had a polyclonal amplification pattern in both biopsy specimens. Four of 5 patients with inflammatory dermatoses had no clone in either biopsy specimen. One patient with an inflammatory dermatosis had an identical clone in both specimens. The sensitivity of TCR-PCR analysis to evaluate for an identical clone at different anatomic skin sites (dual TCR-PCR) is 82.6% and the specificity is 95.7%. LIMITATIONS: The number of patients in the study group was limited. CONCLUSION: These data suggest that dual TCR-PCR is a very promising technique with high specificity in distinguishing MF from inflammatory dermatoses.


Asunto(s)
Micosis Fungoide/patología , Piel/patología , Linfocitos T/patología , Adolescente , Adulto , Anciano , Biopsia/métodos , Células Clonales , Dermatitis/patología , Femenino , Reordenamiento Génico de la Cadena gamma de los Receptores de Antígenos de los Linfocitos T , Humanos , Masculino , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa/métodos , Sensibilidad y Especificidad
19.
Biol Psychiatry ; 59(10): 958-65, 2006 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-16458263

RESUMEN

BACKGROUND: The present study is aimed to examine the neuronal correlates of Stroop interference in medication-free patients with major depressive disorder. METHODS: Sixteen patients fulfilling Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria for unipolar depression and 16 healthy control subjects matched for age, gender, and education were included. All subjects underwent an event-related functional magnetic resonance imaging (fMRI) design with an adapted version of the Stroop task including congruent and incongruent task conditions. The fMRI experiment was conducted on a 1.5 T magnetic resonance (MR) scanner, and item responses were given manually by the subjects. RESULTS: With regard to behavioral performance, patients revealed no differences in both reaction time and accuracy relative to control subjects. With regard to brain activations, direct comparison of patients with control subjects in the interference condition revealed hyperactivity in rostral anterior cingulate gyrus (rACG) and left dorsolateral prefrontal cortex (DLPFC) in depressive patients, which correlated strongly with the Stroop interference. CONCLUSIONS: The study provides new evidence for the functioning and dissociation of the anterior cingulate in depressed patients. The greater prefrontal activation may reflect a cortical inefficiency due to hyperactivity in rACG enhancing the cognitive interferences from the emotional state.


Asunto(s)
Atención/fisiología , Corteza Cerebral/fisiopatología , Percepción de Color/fisiología , Conflicto Psicológico , Trastorno Depresivo Mayor/fisiopatología , Electroencefalografía , Giro del Cíngulo/fisiopatología , Procesamiento de Imagen Asistido por Computador , Inhibición Psicológica , Imagen por Resonancia Magnética , Pruebas Neuropsicológicas , Corteza Prefrontal/fisiopatología , Lectura , Semántica , Adulto , Mapeo Encefálico , Trastorno Depresivo Mayor/diagnóstico , Dominancia Cerebral/fisiología , Potenciales Evocados Visuales/fisiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Valores de Referencia , Estadística como Asunto
20.
Arch Dermatol ; 142(5): 577-84, 2006 May.
Artículo en Inglés | MEDLINE | ID: mdl-16702495

RESUMEN

OBJECTIVES: To evaluate the usefulness of integrated positron emission tomography and computed tomography (PET/CT) in staging mycosis fungoides (MF) and Sézary syndrome and to correlate PET/CT data with histopathologic diagnosis of lymph nodes (LNs). DESIGN: A single-center, prospective cohort analysis. SETTING: Academic referral center for cutaneous lymphoma. PATIENTS: Thirteen patients with MF and SS at risk for secondary LN involvement. Interventions Patients were clinically evaluated based on general physical examination, total body skin examination, and laboratory screening. They underwent integrated PET/CT followed by excisional biopsy of LNs. MAIN OUTCOME MEASURES: We used PET/CT to assess LN size and metabolic activity. Enlarged LNs were defined as axillary or inguinal LNs with a short axis 1.5 cm or larger; or cervical LN, with a short axis 1.0 cm or larger. We classified LN pathologic results according to National Cancer Institute (LN1-4) and World Health Organization (WHO 1-3) criteria. We quantified PET activity using standardized uptake value (SUV) and correlated with LN grade. RESULTS: Based on CT size criteria alone, only 5 patients had enlarged LNs, whereas PET revealed hypermetabolic LNs in all 13 patients. Six patients had LN1-3, and 7 had effacement of LN architecture by lymphoma cells (LN4). Of the 7 patients with LN4 nodes, 4 had SS, and 3 had tumorous MF. Two patients with LN4 nodes had inguinal LNs smaller than 1.5 cm and would have been assigned an N0 classification without the use of integrated PET/CT. Correlation of SUV with LN grade revealed that LN1-3 nodes were associated with a mean SUV of 2.7 (median SUV, 2.2; range, 2.0-4.7) and LN4 nodes were associated with a mean SUV of 5.4 (median SUV, 3.9; range, 2.1-11.8). Patients with large cell transformation had the highest SUVs. CONCLUSIONS: For staging MF and SS, PET/CT was more sensitive in detecting LN involved by lymphoma compared with CT data alone and thus may provide more accurate staging and prognostic information. The intensity of PET activity correlated with histologic LN grade.


Asunto(s)
Micosis Fungoide/diagnóstico , Síndrome de Sézary/diagnóstico , Neoplasias Cutáneas/diagnóstico , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Micosis Fungoide/diagnóstico por imagen , Micosis Fungoide/patología , Estadificación de Neoplasias/métodos , Proyectos Piloto , Tomografía de Emisión de Positrones , Valor Predictivo de las Pruebas , Estudios Prospectivos , Síndrome de Sézary/diagnóstico por imagen , Síndrome de Sézary/patología , Neoplasias Cutáneas/diagnóstico por imagen , Neoplasias Cutáneas/patología , Tomografía Computarizada por Rayos X
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