[Solitary fibrous mediastinal tumor. A case report]

Solitary fibrous tumor is a rare tumor, generally located in the pleura. Recently, new sites have been described in the literature, particularly involving the peritoneum and mediastinum, as wekk as te-the bronchopulmonary and orbital regions. The diagnosis is established at pathology, but in some cases may be difficult to differentiate from other tumors. We report the case of a 60-year-old women who had undergone surgery 25 years ago for right pulmonary hydatid cyst and who presented inspiratory dyspnea and dry cough for four months. Physical examination revealed a right cervical tumefaction in the supraclavian region. The AP chest x-ray disclosed an opacity in the right laterotracheal upper cervicomediastinal zone laminating the trachea which was displaced to the left. Thoracic computerized tomography showed a tissular process in the superior and middle mediastinum. Surgical tumor resection was performed and pathology confirmed the diagnosis of solitary fibrous tumor. The postoperative period was uneventful. Frequency of the mediastinal localisation is the same in men and women. The tumor generally develops between the 5th and 7th decades, and is most often asymptomatic. Fortuitous discovery is the rule. The clinical course is unforeseeable.