Subglottic Stenosis in Adults Workup
- Author: James D Garnett, MD; Chief Editor: Arlen D Meyers, MD, MBA more...
Laboratory Studies
- In the absence of a history of prior trauma or when suggested by other findings, evaluate for inflammatory or infectious causes, including the following:
- Wegener granulomatosis
- Relapsing polychondritis
- Syphilis
- Tuberculosis
- Sarcoidosis
- Leprosy
- Diphtheria
- Scleroma
Imaging Studies
- Radiography
- Standard chest radiographs can often provide a great deal of information regarding the tracheal air column.
- Anteroposterior filtered tracheal views and lateral soft tissue views of the neck provide specific information regarding the glottic/subglottic air column.
- MRI is useful in evaluating length and width of the stenotic region by means of coronal and sagittal views.
- CT scan
- CT scanning is not as helpful as MRI because its views are generally only in the axial plane.
- Thin cuts (1 mm) with sagittal and/or coronal reconstructions may be helpful, however. This is the preferred initial imaging study of the author.
- New software allows virtual bronchoscopy, which may be helpful in assessing the airway and surgical planning prior to actually performing a procedure.
Other Tests
- Flow-volume loops do not offer more specific information regarding stenosis than what is gained from imaging. However, flow-volume loops may be helpful in monitoring for restenosis after intervention.
Diagnostic Procedures
- Videostrobolaryngoscopy is extremely helpful in evaluating the glottic and supraglottic larynx for possible concomitant injury.
- Visualization of the larynx by flexible fiberoptic or rigid telescopic (90- or 70-degree scopes) in the clinic is crucial to the evaluation of airway lesions.
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