Diagnostic yield of transbronchoscopic biopsies

Area of Science:

• Pulmonology
• Diagnostic Procedures
• Medical Research

Background:

• Transbronchoscopic biopsies (transbronchial and endobronchial) are typically high-yield procedures when performed by expert bronchoscopists.
• The diagnostic yield of these biopsies in a general hospital setting with diverse practitioners was not well-established.

Purpose of the Study:

• To evaluate the diagnostic yield of transbronchoscopic biopsies in a general hospital.
• To compare the diagnostic yield between endobronchial and transbronchial biopsies.
• To assess the diagnostic yield in patients with suspected neoplasms versus infections.

Main Methods:

• A retrospective review of 151 consecutive transbronchoscopic biopsies (53 transbronchial, 98 endobronchial) was conducted.
• Biopsy results were analyzed based on suspected diagnosis (neoplasm vs. infection) and specimen type.
• Diagnostic yield was compared between different biopsy techniques and suspected conditions.

Main Results:

• Overall diagnostic yield was low: 44% for endobronchial and 21% for transbronchial biopsies.
• Diagnostic yield was significantly higher for suspected neoplasms (48%) compared to suspected infections (13%).
• A substantial proportion of patients (44%) with definitive diagnoses had negative biopsy results, particularly those with infections (80%).

Conclusions:

• Transbronchoscopic biopsy has a limited diagnostic yield in a general hospital setting, especially for suspected infections.
• Factors such as failure to obtain adequate tissue and lack of fluoroscopic control may contribute to low yields.
• Open lung biopsy may be a preferred method for diagnosing suspected infections in this clinical environment.