Apresentou-se para atendimento um homem de 30 anos, branco, natural e procedente de São Paulo, com quadro de dor em hemitórax esquerdo, na região anterior e lateral, constante e de leve intensidade havia três meses, associado a dispnéia aos grandes esforços havia um mês. Durante a investigação foi visualizada em radiograma, tomografia e ressonância magnética de tórax grande tumoração em mediastino anterior e médio, com possível invasão dos vasos da base. Ele foi submetido à mediastinotomia paraesternal esquerda com biópsia da massa mediastinal, a qual complicou por sangramento intenso. Optou-se pela esternotomia mediana total e toracotomia ântero-lateral esquerda de urgência, com controle do sangramento e ressecção completa do tumor. Houve boa evolução, com alta hospitalar no nono dia pós-operatório. O exame anatomopatológico mostrou tratar-se de hemangioendotelioma de mediastino. J Bras Pneumol 2004; 30(2) 147-149A 30 year old Caucasian male from São Paulo was admitted to the hospital He had been complaining about constant, moderate pain in the anterior and lateral left hemi-thoracic region for the last three months as well as associated great effort dyspnea over the last month.Investigation with chest X-rays, CT scans and MRI revealed a large anterior and medial mediastinal tumor suggesting large vessel invasion. The patient was submitted to a left side parasternal mediastinostomy and a biopsy of the mediastinal mass which was complicated by severe bleeding. An immediate median full sternotomy was elected in addition to a left anteriorlateral thoracotomy for total tumor resection and control of the bleeding. Evolution was good, with hospital discharge on the ninth postoperative day. The anatomical-pathological essay disclosed a hemangioendothelioma of the mediastinum.Descritores: Hemangioendotelioma/diagnóstico. Neoplasias do mediastino.
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