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  • Title: [Mediastinal teratoma with recurrent encysted pleural effusion].
    Author: Beduneau G, Cuvelier A, Héliot P, Métayer J, Muir JF.
    Journal: Rev Mal Respir; 2002 Jun; 19(3):367-70. PubMed ID: 12161704.
    Abstract:
    A 25 year old man with no previous history was admitted for a recurrent right sided encysted pleural effusion. Thoracocentesis revealed an exudative lipase-rich-fluid. Because of the persistence of abundant pleural fluid after several thoracocentesis a diagnostic mediastinotomy was performed. This revealed a necrotic cystic mediastinal tumor composed of well differentiated pancreatic tissue, nervous tissue, digestive and respiratory glands, and a dermoid mass with hair and sebacious glands. This led to a diagnosis of benign, mature mediastinal teratoma. We suggest that the chronic pleural effusion was maintained by a fistula from the tumour into the pleural cavity and the secretion of proteolytic enzymes by the well-differentiated pancreatic tissue.
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