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Lung tumors associated with obstructive pneumonitis: US studies
1Department of Internal Medicine, National Taiwan University Hospital, Taipei, Republic of China.
Radiology
|March 1, 1990
Summary
Real-time ultrasonography (US) and US-guided aspiration biopsy are effective for diagnosing lung tumors causing obstructive pneumonitis when conventional methods fail. This imaging technique aids in identifying tumors and guiding biopsies for accurate diagnosis.
Area of Science:
- Pulmonology
- Radiology
- Oncology
Background:
- Obstructive pneumonitis secondary to lung tumors presents diagnostic challenges.
- Conventional bronchoscopic biopsy may not yield sufficient diagnostic material.
- Advanced imaging modalities are needed for improved tumor detection and characterization.
Purpose of the Study:
- To evaluate the utility of real-time ultrasonography (US) and US-guided aspiration biopsy.
- To assess diagnostic accuracy in patients with lung tumors and obstructive pneumonitis.
- To compare US with computed tomography (CT) in visualizing bronchial obstruction and tumors.
Main Methods:
- Eleven patients with lung tumors and obstructive pneumonitis underwent real-time US.
- US-guided aspiration biopsy and Trucut biopsy were performed.
- US findings were compared with CT for visualization of bronchial obstruction and tumors.
Main Results:
- Sonography revealed wedge-shaped hypoechoic lesions with fluid bronchograms in consolidated lungs.
- CT demonstrated bronchial obstruction more effectively than US (P < .05).
- No significant difference was found between US and CT in visualizing the obstructing tumor (P > .10).
- US-guided transthoracic aspiration biopsy successfully diagnosed tumors in all 11 patients.
Conclusions:
- Ultrasonography and US-guided aspiration biopsy are valuable adjunct diagnostic tools.
- These techniques are particularly useful for lung tumors associated with obstructive pneumonitis.
- US-guided biopsy offers a safe and effective method for obtaining diagnostic tissue.