Delayed diagnosis for primary tracheobronchial amyloidosis

Area of Science:

• Pulmonology
• Rare Diseases
• Medical Diagnostics

Background:

• Tracheobronchial amyloidosis (TBA) is a rare condition characterized by amyloid deposition in the airway submucosa.
• It often presents with nonspecific respiratory symptoms, leading to delayed or incorrect diagnoses.

Observation:

• A 68-year-old male experienced over 30 years of progressive dyspnea, cough, and expectoration.
• Previous diagnoses included chronic bronchitis, bronchiectasis, and tuberculosis, with ineffective treatments.

Findings:

• The patient was ultimately diagnosed with primary TBA via bronchoscopy and histopathological examination.
• Histopathology confirmed abnormal submucosal amyloid deposition in the trachea and bronchi.

Implications:

• TBA diagnosis requires a high index of suspicion, especially in cases of chronic, unexplained respiratory symptoms.
• Bronchoscopy with biopsy is essential for definitive diagnosis, distinguishing TBA from more common pulmonary diseases.
• Early and accurate diagnosis through bronchoscopic histopathology can guide appropriate management for TBA.