Flexible fiberoptic bronchoscopy in sarcoidosis

Area of Science:

• Pulmonology
• Internal Medicine

Background:

• Sarcoidosis is an inflammatory disease characterized by non-caseating epithelioid granulomas.
• Diagnosis often relies on clinical, radiological, and histological findings.

Purpose of the Study:

• To evaluate the diagnostic yield of flexible fiberoptic bronchoscopy (FFB) in patients with suspected sarcoidosis.
• To assess the prevalence and significance of bronchial mucosal involvement in sarcoidosis.

Main Methods:

• Twenty-nine patients with clinical, radiological, and histological evidence of sarcoidosis were studied.
• Flexible fiberoptic bronchoscopy (FFB) with bronchial mucosal and transbronchial lung biopsies was performed.
• Scalene lymph node biopsy was used as a comparative diagnostic method.

Main Results:

• The diagnostic yield for bronchial mucosal biopsies was 41%, and for transbronchial lung biopsies was 43%.
• Epithelioid cell granulomas were detected in 52% of patients via FFB (lung and/or mucosal biopsies).
• Scalene node biopsy yielded a higher diagnostic rate of 79% for epithelioid cell granulomas.

Conclusions:

• Bronchial mucosal sarcoidosis is a frequent finding, often presenting with stenosing processes.
• Flexible fiberoptic bronchoscopy (FFB) is the optimal method for detecting bronchial mucosal sarcoidosis.
• FFB should be considered a routine diagnostic tool for sarcoidosis.