RESUMO
Patients presenting with a painful swollen leg are not infrequently encountered at the emergency department and can pose a diagnostic dilemma for attending physicians. The potential causes of leg pain and swelling include trauma, infection, inflammation, and neurogenic, vascular, and iatrogenic conditions; with magnetic resonance imaging (MRI) being an important tool in evaluation. We describe the MRI features of various conditions causing painful swollen legs. We also discuss the differential diagnosis and the useful clinical and laboratory findings that radiologists should be aware of, in order to arrive at an accurate diagnosis.
Assuntos
Edema/diagnóstico por imagem , Edema/etiologia , Serviço Hospitalar de Emergência , Extremidade Inferior/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Diagnóstico Diferencial , HumanosRESUMO
A 56-year-old Chinese man presented with giddiness and vertigo. Subsequent chest radiography showed the classic scimitar sign of an abnormal pulmonary venous return. Further evaluation with non-contrast computed tomography substantiated the finding of a partial anomalous venous drainage pattern and identified an associated rare lung anomaly, horseshoe lung. The imaging findings of scimitar syndrome and its association with horseshoe lung are reviewed.
Assuntos
Pulmão/anormalidades , Pulmão/diagnóstico por imagem , Síndrome de Cimitarra/diagnóstico por imagem , Diagnóstico Diferencial , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia Torácica , Tomografia Computadorizada por Raios XRESUMO
Computed tomographic (CT) pulmonary angiography is widely used for evaluation of pulmonary embolism. Intraluminal filling defects in the contrast enhanced pulmonary arteries are considered diagnostic of pulmonary emboli. We report a false-positive case where filling defects in the pulmonary artery were due to mixing of blood from a complex shunt or vascular malformation between the systemic arteries and pulmonary artery.
