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· L’aiguille, qui peut avoir jusqu’à 2mm de diamètre, permet de prélever un véritable fragment de tissu qui est traité comme un prélèvement biopsique classique.· Les résultats anatomopathologiques sont beaucoup plus fiables et plus précis que ceux obtenus avec la ponction-aspiration.· Le prélèvement est traité comme celui de la biopsie chirurgicale.· C’est un geste simple, qui comme la ponction-aspiration, peut être effectué sous contrôle radiologique ou échographique.Elle comporte néanmoins deux risques : lésions éventuelles des structures anatomiques et dissémination tumorale sur le trajet de la ponction.

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