EpistemisLocalized and fixed expiratory wheezing at the right base
Specialty: Respiratory.
Why it occurs
- Obstructive bronchogenic carcinoma of the basal segmental bronchus of the right lower lobe (the fixed and irreversible narrowing of the bronchial lumen due to tumor growth generates a single and constant whistling tone perfectly localized on auscultation of the right base, which is not modified by cough or bronchodilator treatment)
- Intrabronchial foreign body aspirated and lodged selectively in the right basal segments due to the more vertical arrangement of the right main bronchus
- Bronchial scarring stenosis of bacterial or tuberculous origin in the right lower lobe
- Extrinsic compression of the right segmental bronchus due to metastatic hilar or subcarinal lymphadenopathy.
Initial workup
Computed tomography (CT) of the chest with intravenous contrast; Flexible bronchoscopy (essential for direct visualization of the right lower lobar bronchus, taking biopsies, bronchial brushing or foreign body extraction); sputum cytology; Spirometry with flow-volume curve.
red flags
Fixed localized wheezing at the right base associated with recurrent hemoptoic sputum or frank hemoptysis, progressive dyspnea on exertion, active smoking with progressive weight loss, or persistent right lower lobar atelectasis on chest x-ray.
Standard management
- Treatment with standard bronchodilators is not effective in resolving mechanical obstruction
- Methylprednisolone — 40 mg intravenously if there is associated peritumoral inflammatory mucosal edema that worsens the obstruction
- Definitive management requires bronchial endoscopic intervention, dilation, or stent placement.
Educational guidance for study. It is NOT a prescription recommendation. The actual choice depends on the cause, the patient, and current guidelines.
- Area
- Respiratory
- Listed causes
- 4
- Treatment options
- 3