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1.
J Am Coll Radiol ; 2024 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-38880289

RESUMEN

OBJECTIVE: To explore the capabilities of Chat Generative Pre-trained Transformer (ChatGPT) for the purpose of simplifying and translating radiology reports into Spanish, Hindi, and Russian languages, with comparisons to its performance in simplifying to the English language. METHODS: Fifty deidentified abdomen-pelvis CT reports were fed to ChatGPT (4.0), instructing it to simplify and translate the report. The processed reports were rated on factual correctness (category 1), potential harmful errors (category 2), completeness (category 3), and explanation of medical terms (category 4). The translated versions were also rated on the quality of translation (category 5). The scores in each category were compared between the translated versions and each translated version was compared with the English version in the first four categories. The original reports and the simplified English reports were rated on the Flesch Reading Ease Score and the Flesch Kincaid Grade Level. RESULTS: The Spanish translation outperformed the Hindi and Russian version significantly in categories 1 and 3 (P < .05). All translated versions performed significantly worse compared with the English version in category 4 (P < .001). Notably, the Hindi translated version performed significantly worse in all four categories (P < .05). The Russian translated version was also significantly worse in category 3 (P < .05). In the first three categories, the Spanish translation, and in the first two categories, the Russian translation demonstrated no statistically significant difference from the English version. No statistically significant difference was observed in the Flesch Reading Ease Score and Flesch Kincaid Grade Level of the simplified English reports. Typographical errors in the original reports negatively affected the translation. CONCLUSION: ChatGPT demonstrates potential ability in translating reports and communicating pertinent clinical information with limited errors. More training and tailoring are required for languages that are not as commonly used in medical literature. Large language models can be used for translating and simplifying radiology reports, potentially improving access to health care and helping reduce health care costs.

2.
Cureus ; 15(12): e50566, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38222194

RESUMEN

We report a case of a 72-year-old male who presented to the hospital with a chief complaint of diplopia in the setting of a recent onset of urinary incontinence and right-sided back pain. He was subsequently diagnosed with prostate cancer, notably metastasizing to the right sphenoid bone, causing impingement of the oculomotor nerve. Our case is unique in that the patient's initial presentation of prostate cancer was oculomotor nerve palsy with subsequent histologic analysis of the primary tumor showing both small cell neuroendocrine carcinoma along with adenocarcinoma. Also, the initial routine stroke protocol MRI and computed tomography angiography (CTA) missed the lesion, while gadolinium-enhanced targeted MRI revealed lesions in both the spine and the orbit. This case emphasizes the need for enhanced contrast as well as focused imaging in patients presenting with diplopia with a negative initial workup for stroke. Ptosis can be a sign of metastasis from other cancers and it is important to have a broad differential including metastatic disease in patients' presenting with similar symptoms and negative initial workup who may otherwise be at risk of cancer.

3.
Eur J Radiol ; 144: 109982, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34717188

RESUMEN

Imaging plays a central role in the diagnosis of axial spondylarthritis (axSpA). Commonly the sacroiliac joints are involved but vertebral involvement can occur in isolation in 1 out of 4 patients. Recognizing vertebral involvement patterns in axSpA can help establishing a diagnosis early and initiate therapy before irreversible changes have occurred. Magnetic resonance imaging (MRI) is considered the reference standard for early detection of inflammatory changes of the disease. Aims of this review are to present an overview of the imaging findings of vertebral involvement in axSpA, and to detail the current recommendations on the role of imaging in the diagnosis of axSpA in patients with isolated vertebral involvement.


Asunto(s)
Espondiloartritis , Espondilitis Anquilosante , Humanos , Imagen por Resonancia Magnética , Articulación Sacroiliaca/diagnóstico por imagen , Columna Vertebral/diagnóstico por imagen , Espondiloartritis/diagnóstico por imagen
4.
J Comput Assist Tomogr ; 44(4): 610-618, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32558772

RESUMEN

Clinical use of dual-energy computed tomography (DECT) and dual-source computed tomography (DSCT) has been well established for more than a decade. Improved software and decreased postprocessing time have increased the advantages and availability of DECT and DSCT imaging. In this article, we will provide a practical guide for implementation of DECT and DSCT in clinical practice and discuss automated processing and selection of CT protocols in neurologic, cardiothoracic, vascular, body, and musculoskeletal imaging.


Asunto(s)
Imagen Radiográfica por Emisión de Doble Fotón/instrumentación , Imagen Radiográfica por Emisión de Doble Fotón/métodos , Tomografía Computarizada por Rayos X/instrumentación , Tomografía Computarizada por Rayos X/métodos , Femenino , Humanos , Masculino , Guías de Práctica Clínica como Asunto , Interpretación de Imagen Radiográfica Asistida por Computador , Factores Sexuales , Programas Informáticos , Factores de Tiempo
5.
Neuroimaging Clin N Am ; 29(4): 481-494, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31677725

RESUMEN

Percutaneous vertebroplasty (VP) progressed from a virtually unknown procedure to one performed on hundreds of thousands of patients annually. The development of VP provides a historically exciting case study into a rapidly adopted procedure. VP was the synthesis of information gained from spinal biopsy developments, the inception of biomaterials used in medicine, and the unique health care climate in France during the 1980s. It was designed as a revolutionary technique to treat vertebral body fractures with minimal side effects and was rapidly adopted and marketed in the United States. The impact of percutaneous vertebroplasty on spine surgery was profound.


Asunto(s)
Fracturas de la Columna Vertebral/economía , Fracturas de la Columna Vertebral/terapia , Vertebroplastia/economía , Vertebroplastia/métodos , Cementos para Huesos/economía , Cementos para Huesos/uso terapéutico , Humanos , Polimetil Metacrilato/economía , Polimetil Metacrilato/uso terapéutico
6.
J Thyroid Res ; 2019: 1893047, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31360432

RESUMEN

Medullary thyroid carcinoma (MTC), arising from the parafollicular C cells of the thyroid, accounts for 1-2% of thyroid cancers. MTC is frequently aggressive and metastasizes to cervical and mediastinal lymph nodes, lungs, liver, and bones. Although a number of new imaging modalities for directing the management of oncologic patients evolved over the last two decades, the clinical application of these novel techniques is limited in MTC. In this article, we review the biology and molecular aspects of MTC as an important background for the use of current imaging modalities and approaches for this tumor. We discuss the modern and currently available imaging techniques-advanced magnetic resonance imaging (MRI)-based techniques such as whole-body MRI, dynamic contrast-enhanced (DCE) technique, diffusion-weighted imaging (DWI), positron emission tomography/computed tomography (PET/CT) with 18F-FDOPA and 18F-FDG, and integrated positron emission tomography/magnetic resonance (PET/MR) hybrid imaging-for primary as well as metastatic MTC tumor, including its metastatic spread to lymph nodes and the most common sites of distant metastases: lungs, liver, and bones.

7.
Insights Imaging ; 9(6): 1035-1056, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30484079

RESUMEN

Fibrous dysplasia (FD) is a congenital disorder arising from sporadic mutation of the α-subunit of the Gs stimulatory protein. Osseous changes are characterised by the replacement and distortion of normal bone with poorly organised, structurally unsound, fibrous tissue. The disease process may be localised to a single or multiple bones. In McCune-Albright syndrome (MAS), fibrous dysplasia is associated with hyperfunction of endocrine organs and overproduction of melanin in the skin, while Mazabraud syndrome FD is associated with intramuscular myxomas. In radiology, FD is very often automatically associated with the term "ground glass matrix". However, FD is a complex disease, and knowledge of its unique pathogenesis and course are crucial to understanding imaging findings and potential complications. This article aims to not only summarise the spectrum of radiological findings of osseous and extra-osseous abnormalities associated with FD but also to highlight the pathological base of the disease evolution, corresponding imaging changes and complications based on the disease distribution. We also have provided current recommendations for clinical management and follow-up of patients with FD. TEACHING POINTS: • FD is often a part of complex disease, involving not only bone but also multiple other organs. • FD lesions are characterised by age-related histological, radiographical and clinical transformations. • Radiologists play a crucial role in the identification of osseous complications associated with FD. • The craniofacial form of the disease is the most common type of FD and the most difficult form to manage. • Patients with McCune-Albright syndrome may have different extra-skeletal abnormalities, which often require follow-up.

8.
Radiol Case Rep ; 13(3): 549-554, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29849856

RESUMEN

Transseptal course of coronary artery has often been described as a benign entity; however, this report and literature analysis provides growing evidence of high risk of serious cardiovascular events in this anomaly. We present a case of unstable angina in a patient with anomalous common origin of left and right coronary arteries from a single coronary ostium at the right sinus of Valsalva, with subsequent transseptal course of the left main artery, review of relevant literature, and discussion of possible management options.

9.
Insights Imaging ; 9(2): 253-274, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29569215

RESUMEN

Degenerative changes in the spine have high medical and socioeconomic significance. Imaging of the degenerative spine is a frequent challenge in radiology. The pathogenesis of this degenerative process represents a biomechanically related continuum of alterations, which can be identified with different imaging modalities. The aim of this article is to review radiological findings involving the intervertebral discs, end plates, bone marrow changes, facet joints and the spinal canal in relation to the pathogenesis of degenerative changes in the spine. Findings are described in association with the clinical symptoms they may cause, with a brief review of the possible treatment options. The article provides an illustrated review on the topic for radiology residents. TEACHING POINTS: • The adjacent vertebrae, intervertebral disc, ligaments and facet joints constitute a spinal unit. • Degenerative change is a response to insults, such as mechanical or metabolic injury. • Spine degeneration is a biomechanically related continuum of alterations evolving over time.

10.
Curr Probl Diagn Radiol ; 47(1): 51-60, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-26372532

RESUMEN

Nontraumatic aortic diseases include a spectrum of disorders, many of which result in high morbidity and mortality. This article highlights the multidetector computed tomography appearance of common and uncommon nontraumatic aortic entities: dissection, intramural hematoma, penetrating atherosclerotic ulcer, pseudoaneurysm, aneurysm, acute thrombus, chronic occlusion, and vasculitis. Additionally, classical imaging mimics and pitfalls are addressed. Radiologists should feel confident identifying these conditions and providing accurate diagnoses to expedite patient care and prevent devastating, even fatal outcomes.


Asunto(s)
Enfermedades de la Aorta/diagnóstico por imagen , Tomografía Computarizada Multidetector , Medios de Contraste , Diagnóstico Diferencial , Humanos
11.
J Comput Assist Tomogr ; 42(2): 230-235, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-28937487

RESUMEN

Hepatomegaly and elevated liver enzymes in patients with diabetes are commonly associated with fatty liver disease. However, physicians often forget about another intrinsic substance that can cause a similar clinical picture-glycogen. Liver stores approximately one third of the total body glycogen and is responsible for blood glucose homeostasis. Excessive hepatocellular glycogen accumulation occurs not only in congenital glycogen storage diseases, but also in acquired conditions associated with hyperglycemic-hyperinsulinemic states such as uncontrolled diabetes mellitus, high-dose corticosteroid use, and dumping syndrome. All reported cases of acquired abnormal glycogen deposition described a diffuse form of hepatic glycogenosis with the entire liver involved in the accumulating process. To our knowledge, this is the first reported case of abnormal focal glycogen deposition in a patient with diabetes mellitus type 1 with imaging and pathologic correlation. Awareness of the imaging appearance of focal glycogen deposition can help to distinguish it from other pathologic conditions.


Asunto(s)
Diabetes Mellitus Tipo 1/complicaciones , Enfermedad del Almacenamiento de Glucógeno/complicaciones , Enfermedad del Almacenamiento de Glucógeno/diagnóstico , Adulto , Humanos , Hígado/diagnóstico por imagen , Hígado/patología , Pruebas de Función Hepática , Masculino , Tomografía Computarizada por Rayos X/métodos , Adulto Joven
12.
Br J Sports Med ; 52(7): 465-469, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29051166

RESUMEN

BACKGROUND: Tendon abnormalities are prevalent among both elite and non-elite athletes. Cross-sectional imaging modalities are used to confirm and evaluate the severity of such lesions. AIM: To describe the demographics, prevalence, anatomical location and characteristics of tendon abnormalities in athletes who participated in the Rio de Janeiro 2016 Summer Olympic Games. METHODS: We recorded all sports injuries reported by the National Olympic Committee (NOC) medical teams and the Organizing Committee medical staff during the Rio 2016 Summer Olympics. Diagnostic imaging was performed through the official IOC clinic within the Olympic Village, using digital ultrasound machines and 3T and 1.5T MR scanners. Image interpretation was performed centrally by board-certified musculoskeletal radiologists with expertise in sports injuries. RESULTS: In total, 11 274 athletes (5089 women (45%), 6185 men (55%)) from 207 NOCs were included. NOC and Rio de Janeiro 2016 medical staff reported 1101 injuries. Central review of radiological images revealed 156 tendon abnormalities in 109 athletes (51.2% male, mean age: 26.8, range 18-39). The supraspinatus tendon was the most commonly involved tendon (31 cases, 19.9%), followed by the Achilles tendon (20 cases, 12.8%) and patellar and infraspinatus tendons (12 cases, 7.7%). Tendon abnormalities were most commonly seen in track and field athletes (54 abnormalities, 34.6%). CONCLUSION: 156 tendon abnormalities were reported, most commonly in track and field athletes, and involving mainly the shoulder tendons, as well as Achilles and patellar tendons.


Asunto(s)
Traumatismos en Atletas/epidemiología , Traumatismos de los Tendones/diagnóstico por imagen , Adolescente , Adulto , Aniversarios y Eventos Especiales , Atletas , Brasil , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Prevalencia , Atletismo , Ultrasonografía , Adulto Joven
13.
Radiographics ; 36(6): 1888-1910, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27726741

RESUMEN

Infection of the musculoskeletal system can be associated with high mortality and morbidity if not promptly and accurately diagnosed. These infections are generally diagnosed and managed clinically; however, clinical and laboratory findings sometimes lack sensitivity and specificity, and a definite diagnosis may not be possible. In uncertain situations, imaging is frequently performed to confirm the diagnosis, evaluate the extent of the disease, and aid in treatment planning. In particular, cross-sectional imaging, including computed tomography and magnetic resonance imaging, provides detailed anatomic information in the evaluation of soft tissues due to their inherent high spatial and contrast resolution. Imaging findings of soft-tissue infections can be nonspecific and can have different appearances depending on the depth and anatomic extent of tissue involvement. Although many imaging features of infectious disease can overlap with noninfectious processes, imaging can help establish the diagnosis when combined with the clinical history and laboratory findings. Radiologists should be familiar with the spectrum of imaging findings of soft-tissue infections to better aid the referring physician in managing these patients. The aim of this article is to review the spectrum of soft-tissue infections using a systematic anatomic compartment approach. We discuss the clinical features of soft-tissue infections, their imaging findings with emphasis on cross-sectional imaging, their potential mimics, and clinical management. ©RSNA, 2016.


Asunto(s)
Celulitis (Flemón)/diagnóstico por imagen , Errores Diagnósticos/prevención & control , Fascitis Necrotizante/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Infecciones de los Tejidos Blandos/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodos , Diagnóstico Diferencial , Medicina Basada en la Evidencia , Humanos , Aumento de la Imagen/métodos , Imagen Multimodal/métodos , Posicionamiento del Paciente/métodos
14.
Radiographics ; 36(7): 1987-2006, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27689833

RESUMEN

Chronic liver disease has multiple causes, many of which are increasing in prevalence. The final common pathway of chronic liver disease is tissue destruction and attempted regeneration, a pathway that triggers fibrosis and eventual cirrhosis. Assessment of fibrosis is important not only for diagnosis but also for management, prognostic evaluation, and follow-up of patients with chronic liver disease. Although liver biopsy has traditionally been considered the reference standard for assessment of liver fibrosis, noninvasive techniques are the emerging focus in this field. Ultrasound-based elastography and magnetic resonance (MR) elastography are gaining popularity as the modalities of choice for quantifying hepatic fibrosis. These techniques have been proven superior to conventional cross-sectional imaging for evaluation of fibrosis, especially in the precirrhotic stages. Moreover, elastography has added utility in the follow-up of previously diagnosed fibrosis, the assessment of treatment response, evaluation for the presence of portal hypertension (spleen elastography), and evaluation of patients with unexplained portal hypertension. In this article, a brief overview is provided of chronic liver disease and the tools used for its diagnosis. Ultrasound-based elastography and MR elastography are explored in depth, including a brief glimpse into the evolution of elastography. Elastography is based on the principle of measuring tissue response to a known mechanical stimulus. Specific elastographic techniques used to exploit this principle include MR elastography and ultrasonography-based static or quasistatic strain imaging, one-dimensional transient elastography, point shear-wave elastography, and supersonic shear-wave elastography. The advantages, limitations, and pitfalls of each modality are emphasized. ©RSNA, 2016.


Asunto(s)
Errores Diagnósticos/prevención & control , Diagnóstico por Imagen de Elasticidad/métodos , Diagnóstico por Imagen de Elasticidad/tendencias , Enfermedad Hepática en Estado Terminal/diagnóstico por imagen , Cirrosis Hepática/diagnóstico por imagen , Diagnóstico Diferencial , Enfermedad Hepática en Estado Terminal/complicaciones , Medicina Basada en la Evidencia , Humanos , Aumento de la Imagen/métodos , Cirrosis Hepática/complicaciones
15.
Radiographics ; 36(2): 481-96, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26963458

RESUMEN

The combination of fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) and computed tomography (CT) for dual-modality imaging (PET/CT) plays a key role in the diagnosis and staging of FDG-avid malignancies. FDG uptake by the tumor cells offers an opportunity to detect cancer in organs that appear normal at anatomic imaging and to differentiate viable tumor from posttreatment effects. Quantification of FDG uptake has multiple clinical applications, including cancer diagnosis and staging. Dedicated FDG PET/CT-based visual and quantitative criteria have been developed to evaluate treatment response. Furthermore, the level of tumor FDG uptake reflects the biologic aggressiveness of the tumor, predicting the risk of metastasis and recurrence. FDG uptake can be measured with qualitative, semiquantitative, and quantitative methods. Qualitative or visual assessment of PET/CT images is the most common clinical approach for describing the level of FDG uptake. Standardized uptake value (SUV) is the most commonly used semiquantitative tool for measuring FDG uptake. SUV can be measured as maximum, mean, or peak SUV and may be normalized by using whole or lean body weight. SUV measurements provide the basis for quantitative response criteria; however, SUVs have not been widely adopted as diagnostic thresholds for discriminating malignant and benign lesions. Volumetric FDG uptake measurements such as metabolic tumor volume and total lesion glycolysis have shown substantial promise in providing accurate tumor assessment. SUV measurement and other quantification techniques can be affected by many technical, physical, and biologic factors. Familiarity with FDG uptake quantification approaches and their pitfalls is essential for clinical practice and research.


Asunto(s)
Radioisótopos de Flúor/análisis , Fluorodesoxiglucosa F18/análisis , Neoplasias/diagnóstico por imagen , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodos , Radiofármacos/análisis , Factores de Confusión Epidemiológicos , Radioisótopos de Flúor/farmacocinética , Fluorodesoxiglucosa F18/farmacocinética , Glucólisis , Humanos , Estadificación de Neoplasias/métodos , Neoplasias/metabolismo , Tomografía Computarizada por Tomografía de Emisión de Positrones/normas , Radiofármacos/farmacocinética , Estándares de Referencia , Reproducibilidad de los Resultados , Distribución Tisular
16.
Neurosurg Focus ; 39(1): E3, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-26126402

RESUMEN

General Mikhail Kutuzov (circa 1745-1813) brilliantly repelled Napoleon's invasion of Russia. Honored as a national hero and a savior of Russia, Kutuzov has a unique medical story. He was shot in the head twice while fighting the Turks (1774 and 1788) and survived the serious injuries seemingly against all odds. The first bullet "ran through the head from one temple to the other behind both eyes." The second bullet entered the cheek, destroyed upper teeth, traveled through the head, and exited the occiput. Massot, a French surgeon with the Russian army, wrote after treating Kutuzov's seemingly two mortal wounds: "It must be believed that fate appoints Kutuzov to something great, because he was still alive after two injuries, a death sentence by all the rules of medical science." Aided by Massot's expert surgical technique, Kutuzov lived to become intimately engaged in events that altered world history. His health did, however, suffer significant effects due to the bullet wounds. In 1812, as Napoleon's Grande Armée approached, Kutuzov realized he could not confront Napoleon and he strategically retreated from Moscow, submitting the French to the harsh winter and Russian cavalry. Napoleon's devastated army retreated to Paris, and Kutuzov became the personification of Russian spirit and character. Kutuzov's survival of two nearly mortal head wounds created the legends, additional mystery, and drama surrounding him, not the least astonishing of which was the skilled neurosurgical care that probably saved his life.


Asunto(s)
Traumatismos Craneocerebrales/etiología , Traumatismos Craneocerebrales/historia , Personajes , Guerra , Heridas por Arma de Fuego/complicaciones , Anciano , Traumatismos Craneocerebrales/diagnóstico , Grabado y Grabaciones/historia , Historia del Siglo XVIII , Historia del Siglo XIX , Humanos , Masculino , Moscú , Pinturas/historia , Rusia (pre-1917)
17.
Radiographics ; 35(1): 152-63, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25590395

RESUMEN

Extrapulmonary small cell carcinoma (EPSCC) refers to small cell carcinoma arising outside of the lungs. EPSCC extrapulmonary small cell carcinoma is a rare aggressive neoplasm, representing a minority of all small cell carcinomas. Despite its uncommon occurrence, EPSCC extrapulmonary small cell carcinoma has been described in nearly every organ, most commonly in the gastrointestinal and genitourinary systems. As such, it is important for radiologists to be aware of the entity. Although imaging is neither sensitive nor specific for EPSCC extrapulmonary small cell carcinoma , it plays an important role by helping exclude metastases from a primary pulmonary tumor, establish tumor staging, and assess response to therapy. EPSCC extrapulmonary small cell carcinoma is diagnosed by demonstrating pathologic features of small cell carcinoma in an extrapulmonary site. There are two ways to stage EPSCC extrapulmonary small cell carcinoma . One method uses the Veterans Administration Lung Study Group system developed for small cell lung cancer that allocates patients into limited or extensive disease categories. The second approach is the American Joint Committee on Cancer tumor-node-metastasis system applied to other tumor subtypes arising from the same organ. Because of its rare and varied manifestations, the most effective treatment for EPSCC extrapulmonary small cell carcinoma has not been established. Current management recommendations are derived from retrospective studies and single-institution experiences or are extrapolated from small cell lung cancer data. Regardless of therapy, overall survival rates are poor, with 5-year survival rates around 13%. To help radiologists increase their familiarity with EPSCC extrapulmonary small cell carcinoma , this article provides (a) a background for EPSCC extrapulmonary small cell carcinoma based on the literature and (b) a pictorial review of EPSCC extrapulmonary small cell carcinoma in multiple organs, with radiologic-pathologic correlation.


Asunto(s)
Carcinoma de Células Pequeñas/diagnóstico , Diagnóstico por Imagen , Carcinoma de Células Pequeñas/epidemiología , Carcinoma de Células Pequeñas/patología , Medios de Contraste , Humanos , Estadificación de Neoplasias
18.
Radiographics ; 34(6): 1636-57, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25310421

RESUMEN

Coronary microcirculatory dysfunction has a fundamental role in the pathophysiology of ischemic coronary artery disease (CAD) as well as various other cardiovascular disorders. Invasive coronary angiography remains the standard of reference for diagnosis of CAD. Nevertheless, it has been well acknowledged that the degree of luminal narrowing of epicardial coronary lesions detected at angiography is a poor predictor of the functional severity of the lesion. Recent studies demonstrate that assessment of coronary microcirculatory function by means of noninvasive myocardial perfusion imaging helps increase diagnostic accuracy and guide medical decision-making. Among available diagnostic modalities, cardiac magnetic resonance (MR) perfusion imaging has evolved to become a reliable and robust tool providing accurate quantitative assessment of regional myocardial perfusion. Owing to its high spatial resolution, noninvasive nature, and absence of ionizing radiation, cardiac MR perfusion imaging has improved detection of clinically relevant CAD. It has also offered further insights into the understanding of various cardiovascular disorders resulting from coronary microvascular dysfunction in the absence of proximal flow-limiting CAD. Cardiac MR perfusion imaging is now routinely used in many centers and shows promise in evaluating patients with disorders beyond those of the epicardial coronary circulation. Recent implementation of high-field-strength magnets and rapid acquisition techniques have further contributed to expanding the role of cardiac MR perfusion imaging to include novel promising applications. In this article, we provide an overview of cardiac MR perfusion imaging, including techniques, image analysis, and clinical applications.


Asunto(s)
Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/fisiopatología , Circulación Coronaria/fisiología , Imagen por Resonancia Magnética/métodos , Medios de Contraste , Humanos
19.
Thyroid ; 24(10): 1488-500, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24921429

RESUMEN

BACKGROUND: Spinal metastases (SMs) due to thyroid cancer (TC) are associated with significantly reduced quality of life. The goal of this study is to analyze the clinical manifestations, presentation, and treatments of TC SMs, and to describe specific features of SMs associated with different TC types. PATIENTS AND METHODS: A retrospective analysis of 202 TC SM patients treated at Medstar Washington Hospital Center (37) and collected from the literature (165) was performed. RESULTS: The mean age of patients with SMs was 56.9±14.7 years, and the female-to-male ratio was 2.1:1. Of all patients, 29% (28% of follicular thyroid cancer [FTC] and 37% of papillary thyroid cancer [PTC]) had SMs only. Twenty-nine percent of all patients and 54% of patients with single-site SMs had neither bone non-SMs nor solid organ metastases at the time of presentation. Thirty-five percent of patients had SMs as an initial presentation of TC. TC patients presenting with SMs had a lower rate of other bone and visceral involvement compared with patients whose SMs were diagnosed at the time of thyroid surgery or during follow-up (p<0.05). SMs were more often the initial manifestation of FTC (41% vs. 24%), while PTC SMs were more commonly diagnosed after TC diagnosis (76% vs. 59%; p<0.05). PTC SMs were more frequently diagnosed as synchronous (63% vs. 36% in FTC) versus FTC SMs that developed as metachronous metastases (64% vs. 37% in PTC; p<0.01). All FTC SMs developed within 82 (0-372) months and all PTC SMs within 35 (0-144) months (p<0.01). In FTC SMs as TC manifestation, solid organ metastases involvement was less common than in FTC SMs that were found after TC diagnosis (34% vs. 67%; p<0.01); multisite FTC SMs compared to solitary FTC SMs were associated with the development of other bone nonspinal metastases (82% vs. 30%; p<0.01) and solitary organ metastases (65% vs. 41%; p<0.01). These correlations were not observed in PTC SMs. FTC patients often had neural structure compression (myelopathy/radiculopathy; 72% vs. 36% in PTC), while PTC patients frequently were asymptomatic (38% vs. 5% in FTC; p<0.01). FTC SMs more commonly were (131)I-avid (p<0.01). FTC patients required surgery more frequently (72% vs. 55% in PTC; p<0.05). CONCLUSIONS: Our study reveals that a significant part of TC SMs patients have solitary spinal involvement at the time of presentation and may be considered for aggressive treatment with the intention to improve quality of life and survival. FTC SMs and PTC SMs appear to have distinct presentations, behavior, and treatment modalities, and should be categorized separately for treatment and follow-up planning.


Asunto(s)
Adenocarcinoma Folicular/secundario , Carcinoma/secundario , Neoplasias de la Columna Vertebral/secundario , Neoplasias de la Tiroides/patología , Adenocarcinoma Folicular/mortalidad , Adenocarcinoma Folicular/terapia , Adulto , Anciano , Carcinoma/mortalidad , Carcinoma/terapia , Carcinoma Papilar , District of Columbia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Selección de Paciente , Estudios Retrospectivos , Factores de Riesgo , Neoplasias de la Columna Vertebral/mortalidad , Neoplasias de la Columna Vertebral/terapia , Cáncer Papilar Tiroideo , Neoplasias de la Tiroides/mortalidad , Factores de Tiempo , Resultado del Tratamiento
20.
Thyroid ; 24(10): 1443-55, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24827757

RESUMEN

BACKGROUND: The spine is the most common site of bone metastases due to thyroid cancer, which develop in more than 3% of patients with well-differentiated thyroid cancer. Nearly half of patients with bone metastases from thyroid cancer develop vertebral metastases. Spinal metastases are associated with significantly reduced quality of life due to pain, neurological deficit, and increased mortality. SUMMARY: Treatment options for patients with thyroid spinal metastases include radioiodine therapy, pharmacologic therapy, and surgical treatments, with recent advances in radiosurgery and minimally invasive spinal surgery as well. Therapeutic interventions require a multidisciplinary approach and aim to control pain, preserve or improve neurologic function, optimize local tumor control, and improve quality of life. We have proposed a three-tiered approach to the management and practical algorithms for patients with spinal metastases from thyroid carcinoma. CONCLUSIONS: The introduction of novel and improved techniques for the treatment of spinal metastases has created the opportunity to significantly improve control of metastatic tumor growth and the quality of life for the patients with spinal metastases from thyroid cancer. In order for these options to be effectively used, a multidisciplinary approach must be applied in the management of the patients with thyroid spinal metastases.


Asunto(s)
Carcinoma/secundario , Carcinoma/terapia , Neoplasias de la Columna Vertebral/secundario , Neoplasias de la Columna Vertebral/terapia , Neoplasias de la Tiroides/patología , Algoritmos , Carcinoma/mortalidad , Vías Clínicas , Humanos , Selección de Paciente , Calidad de Vida , Neoplasias de la Columna Vertebral/mortalidad , Neoplasias de la Tiroides/mortalidad , Resultado del Tratamiento
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