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  • Title: Transthoracic needle biopsy with a coaxially placed 20-gauge automated cutting needle: results in 122 patients.
    Author: Klein JS, Salomon G, Stewart EA.
    Journal: Radiology; 1996 Mar; 198(3):715-20. PubMed ID: 8628859.
    Abstract:
    PURPOSE: To determine the utility of coaxial transthoracic needle biopsy (TNB) with use of a 20-gauge automated cutting biopsy needle in the diagnosis of thoracic lesions. MATERIALS AND METHODS: A retrospective review was performed in 122 patients. Computed tomography was used to guide coaxial TNB, which was performed with aspirating (n = 87) and automated cutting (n = 99) needles. The sensitivities for malignant and benign lesions were determined, with a comparison of the relative yields from the two techniques. RESULTS: The overall diagnostic yield for coaxial TNB was 88%. For malignancy the sensitivity was 95%, whereas a specific benign diagnosis was obtained in 91%. Although no difference was found for fine-needle aspiration versus core biopsy of malignant lesions (92% vs 86%), a statistically significant difference was found for benign lesions (44% vs 100%, P<.05). Pneumothorax occurred in 54%. CONCLUSION: Coaxial TNB performed with an automated cutting needle helps provide a diagnosis in the majority of patients with focal chest disease and is particularly useful in the diagnosis of benign lesions.
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