Body plethysmography in the evaluation of intrathoracic airway abnormalities.
case_report · Level V
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Abstract
A patient with a previously unsuspected intrathoracic tracheal malignancy presented with symptoms suggestive of asthma and an unusual pattern seen by conventional PFTs. Reduced expiratory flows with a large difference between FVC and SVC, normal inspiratory flows and high MVV/FEV1 were found. Body plethysmography using normal and panting efforts with increasing tidal volume and flow helped define the lesion as a variable intrathoracic obstruction and document its regression after palliative therapy.
Medical subject headings
- Carcinoma, Squamous Cell
- Plethysmography, Whole Body
- Tracheal Neoplasms