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Superior Cava Venous Syndrome (SVCS) encompasses a constellation of signsand symptoms resulting from partial or complete obstruction of blood flow through the superior vena cava (SVC) to the right atrium. Thrombosis can be caused by intrinsic (primary) or extrinsic compression (with or without secondary thrombosis).The causes of SVCS can be grouped according to their etiology in non-neoplastic and neoplastic. The causes malignant correspond to 65-90% of them, thrombosis and nonmalignant conditions are another causes.The presentation may be acute, clinically characterized by dyspnea and a characteristic triad (facial, neck and arms edema, cyanosis and collateral  circulation).Early detection improves prognosis and is based on clinical data and imaging studies.We describe 8 cases where the SVCS was the first manifestation of neoplasticdiseases. Patients were predominantly of middle-aged, male, without association with consumption of tobacco and lymphoma was most frequent diagnosis

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ResumenIntroducción: El síndrome de eosinofilia pulmonar se caracteriza por un grupo de patologías que presentan afección clínico – radiológica pulmonar con eosinofilia periférica o en parénquima pulmonar en su evolución. Materiales y métodos: Se describen las características de presentaciones clínico-radiológicas y evolutivas de pacientes atendidos entre 2007 y 2010 en Hospital Rawson.Resultados: Sobre 8 casos, se observó mayor número de casos en mujeres. Los signos y síntomas principales fueron tos, disnea, fiebre y sibilancias. Los hallazgos radiológicos más prevalentes fueron patrón alveolar y alveolointersticial. En la TAC el más frecuente fue el patrón en vidrio esmerilado. La eosinofilia periférica presentó valores entre 550 y 10.000 cel/mm3. Los pacientes fueron abdordados inicialmente como neumonía adquirida en la comunidad en el 62% de los casos. Los diagnósticos principales realizados fueron neumonía eosinofílica aguda y crónica, ambas con respuesta a esteroides.Conclusiones: El síndrome de eosinofilias pulmonares comparte características clínico-radiológicas comunes con entidades de mayor prevalencia, particularmente NAC. AbstractIntroduction: Pulmonary eosinophilia syndrome is characterized by a group of diseases that present clinical –radiological conditions, pulmonary eosinophilia or peripheral lung parenchyma in its evolution. We described the clinical and radiological presentation.Methods: Retrospective descriptive analysis of medical records of 7 patients between 2007 and 2010.Results: The highest numbers of cases were observed in women, with peripheral eosinophilia with values between 550 and 10,000 cells/mm3. The more frequent signs and symptoms were cough, dyspnea, fever and wheezing. The more prevalent radiological findings were alveolar interstitial and alveolar pattern. At CT scan, the most frequent pattern was ground glass. The main diagnoses made were acute and chronic eosinophilic pneumonia in equal proportions, both with response to steroids.Conclusions: The pulmonary eosinophilia syndrome shares common features with clinical and radiological entities most prevalent, particularly community-adquired pneumonia.