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1 From the Department of Radiology (Thoracic Division), University of Michigan Medical Center, Ann Arbor
2 From the Deparment of Surgery (Thoracic Division), University of Michigan Medical Center, Ann Arbor
3 From the Department of Internal Medicine (Pulmonary Division), University of Michigan Medical Center, Ann Arbor
Purpose: To describe the risks of transthoracic needle aspiration (TTNA) in a population of patients with severe lung disease: candidates for lung transplantation.
Materials and methods: Eight of 190 patients evaluated for lung transplantation underwent TTNA of nine pulmonary nodules (mean diameter, 14 mm; range, 0.8 to 2.2 cm). We evaluated pneumothorax rate, chest tube rate, duration of placement, and pulmonary function test results.
Results: All patients had emphysema; two had
1-antitrypsin deficiency. The mean FEV1 of all patients was 0.64 L (22% of predicted; range, 17 to 28%), indicating severe air-flow obstruction. Six patients (75%) developed a pneumothorax. Four patients required a chest tube (50%); three chest tubes were placed emergently on the CT scanner table. Three patients required a second chest tube for persistent air leak. Tubes were in place for 1 to 22 days (mean, 10 days). One patient had chest tubes for 22 days and required intubation.
Conclusion: TTNA in patients with marked emphysema is complicated by a high incidence of pneumothorax, rapid development of tension pneumothorax and chest tube placement. Since nodules in lung transplant candidates may represent bronchogenic carcinoma, serial CT scans to demonstrate lesion stability or growth, or thoracoscopic resection should be considered as an alternate approach to TTNA to avoid the significant morbidity of the procedure in these patients.
Key Words: lung biopsy lung neoplasms diagnosis lung transplantation
Submitted on July 11, 1995
Accepted on August 9, 2007
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