J Korean Radiol Soc.
1995 Sep;33(3):379-382.
Transthoracic Fine Needle Aspiration Biopsy of Subcarinal Lesion: Oblique Approach Using Biplane Fluoroscopic Guidance
Abstract
- PURPOSE
To evaluate effectiveness of oblique approach under biplane fluoroscopic guidance in transthoracic
fine needle aspiration biopsy.
MATERIALS AND METHODS
Fourteen consecutive patients underwent transthoracic fine needle aspiration biopsy
for subcarinal lesions. Subcarina was the only accessible biopsy site in 13 patients. Subcarinal biopsy
was performed to determine the presence of metastasis in an enlarged subcarinal lymph node in the remaining
one patient. Before biopsy, we evaluated the size and location of the lesion on preliminary plain chest X-ray
film and CT scan. Under dual projection fluoroscopic guidence, biopsy was performed through right posterior
intercostal space with the patient prone by using oblique approach. On 15 degree LAO projection the needle
was directed to the area anterior to the spine and advanced to the line extending through the posterior wall of
the main bronchus.
RESULTS
Cytologic diagnosis was made in 12 out of 14 patients(accuracy 85.7%). The final diagnosis consisted
of 5 squamous cell carcinoma, 5 small cell carcinoma, 1 adenocarcinoma and 1 adenosquamous carcinoma.
Pneumothorax developed in 2 patients(14%) and was managed by chest tube drainage. Mild hemoptysis
was observed in 2.
CONCLUSION
Transthoracic fine needle aspiration biopsy using oblique approach under biplane fluoroscopic
guidance is a relatively safe and sensitive method for the histologic diagnosis of subcarinal lesion.