Sarcoidosis, Pulmonary Clinical Trial
Official title:
A Pilot Study of Peripheral Airway Biopsy for the Diagnosis of Sarcoidosis
Airway involvement in sarcoidosis was demonstrated in a meaningful, albeit variable, proportion of patients through biopsy of the central, endoscopically visible airways. Ideally, biopsy of peripheral airways, nowadays possible with the introduction in the market of ultrathin bronchoscopes, might be associated with an increased diagnostic yield for the detection of granulomas.
Sarcoidosis is a systemic disorder of unknown cause that primarily involves the lung and lymphatic systems and that is more reliably diagnosed if a compatible clinical picture is combined with a pathologic demonstration of non-necrotizing epithelioid-cell granulomas. Endobronchial biopsy (EBB), taken from the central airways with standard-sized videobronchoscopes, has long been used in clinical practice, although its diagnostic yield has been shown to be widely variable across different ethnicities. A recent prospective study shows that the diagnostic yield of EBB in a sarcoidosis population with large prevalence of white Europeans is 37% overall, and 22% in patients who do not have endobronchial abnormalities. The diagnostic yield of biopsies taken from peripheral airways with ultrathin bronchoscopes was never been evaluated, to our knowledge. ;
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