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  • Title: Application of a new guiding system in percutaneous biopsies.
    Author: Petsas T, Tsota I, Kalogeropoulou CP, Liatsikos EN.
    Journal: Cardiovasc Intervent Radiol; 2007; 30(2):276-80. PubMed ID: 17131211.
    Abstract:
    We herein describe the application of a new guiding system designed for percutaneous biopsies. The guiding system set is composed of a 0.41 mm (27G) stainless steel guide stylet and a 22G Chiba needle. Following the initial insertion of the Chiba needle, the stylet is advanced via the needle toward the lesion. The stylet serves either as a guide for the Chiba needle or as an exchange wire for the introduction of larger or cutting biopsy needles. The stylet can also be curved prior to its insertion to facilitate access to lesions which require needle redirection. The technique was applied to 117 cases (54 thoracic, 31 abdominal, 21 pelvic, and 11 vertebral lesions.) The main advantage of the stylet is its small diameter, rendering it atraumatic and permitting multiple punctures for the successful final targeting of the lesion. With this guiding set we achieved targeting of difficult lesions. Furthermore, larger needles were more easily introduced in locations that posed technical difficulties. No major complications were observed. The complication rate was comparable to that of the conventional biopsy technique. The technique using the guide stylet was easily performed and could be applied to almost all organs.
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