Aspiration Lung Biopsy with Ultrathin Needles

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Abstract
Aspiration lung biopsy with ultrathin needles (gauge 24–25) was performed in 232 patients. A diagnosis was established with ultrathin needles in 134 of 164 patients with malignancy. Comparison of cytologic diagnosis and histologic diagnosis was made in 49 patients. There were no false-positive results, and histologic diagnosis was similar to cytologic diagnosis in 69% of cases. Only 8 of 55 patients with non-malignant conditions had the specific diagnosis established with ultrathin needle biopsy. Our data support the safety and efficacy of the procedure in patients with malignant disease. Although the yield in non-malignant conditions was low, the relative safety of the procedure justifies its use since patients may be spared of more invasive procedures

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