Radiología
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Congenitally corrected transposition of the great vessels implies double discordance: atrioventricular and ventriculoarterial. We present cardiac magnetic resonance images from a 9-year-old girl with congenitally corrected transposition of the great vessels, interventricular communication, and coarctation of the aorta who was treated with pulmonary artery banding, correction of coarctation, and posterior double switch. We also review the disease and the complications that should be evaluated after the surgical intervention.
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HIV-negative immunosuppressed patients comprise a heterogeneous group including transplant patients, patients undergoing treatment with immunosuppressors, uremic patients, alcoholics, undernourished patients, diabetics, patients on dialysis, elderly patients, and those diagnosed with severe or neoplastic processes. Epileptic seizures, focal neurologic signs, and meningoencephalitis are neurologic syndromes that require urgent action. ⋯ Other neurologic emergencies include ischemic stroke, cerebral hemorrhage, neoplastic processes, and pharmacological neurotoxicity. This article reviews the role of neuroimaging in HIV-negative immunodepressed patients with a neurologic complication that requires urgent management.
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Child abuse or nonaccidental trauma is a major problem worldwide; in Spain, there are about 12,000 victims per year. The detection of specific lesions or findings that are incongruent with the reported mechanism of trauma mean that radiologists are often the physician responsible for sounding the alarm in cases of abuse. The triad consisting of subdural hematoma, metaphyseal fracture, and posterior rib fractures is very characteristic of the battered child syndrome. ⋯ A follow-up skeletal survey about two weeks after the initial survey is useful for detecting new fractures and for assessing the consolidation of others, which helps in dating the lesions. Head injuries are the leading cause of death in abused children. Although computed tomography is the first neuroimaging technique in nonaccidental trauma, magnetic resonance imaging of the head can better characterize the lesions seen on computed tomography and can help to estimate the age of the lesions.
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To review the most common and most important diseases and disorders of the central nervous system (CNS) in pediatric emergencies, discussing the indications for different imaging tests in each context. ⋯ In pediatric patients, acute neurologic symptoms (seizures, deteriorating level of consciousness, focal neurologic deficits, etc.) can appear in diverse clinical situations (trauma, child abuse, meningoencephalitis, ischemia…). It is important to decide on the most appropriate neuroimaging diagnostic algorithm for each situation and age group, as well as to know the signs of the most typical lesions that help us in the etiological differential diagnosis. Pediatric patients' increased vulnerability to ionizing radiation and the possible need for sedation in studies that require more time are factors that should be taken into account when indicating an imaging test. It is essential to weigh the risks and benefits for the patient and to avoid unnecessary studies.
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To determine the sensitivity and accuracy of direct MR arthrography in the diagnosis of intra-articular lesions associated with femoroacetabular impingement. ⋯ In patients with femoroacetabular impingement, direct MR arthrography can adequately detect and characterize lesions of the acetabular labrum and of the labral-chondral transitional zone as well as extensive lesions of the articular cartilage and secondary osseous changes.