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Cytomegalovirus (CMV) infection and CMVdisease are frequent complications in immunocompromised patients. Inthis study, the incidence of pulmonary CMV infection was analyzed indifferent groups of immunocompromised patients and the diagnostic valueof immunostaining with anti-CMV antibodies in BAL cells wasevaluated in regard to the diagnosis of CMV pneumonitis.

Transbronchial needle aspiration (TBNA) is a bronchoscopic sampling technique used for the diagnostic workup of mediastinal lymph nodes, but the value of its routine use in evaluating peripheral pulmonary lesions is not yet firmly established.

To assess the usefulness of an animal model for testing new tracheobronchial stents.