Localization needle

A marking assembly for marking targeted tissue, the marking assembly comprising:

• a cannula having a wall extending from an open proximal end to a closed distal end, the wall defining a lumen of the cannula, the wall having a distal portion defining a plurality of openings;
• a stylet configured to be received in the lumen of the cannula, the stylet having a wall extending from an open proximal end to a closed distal end, the stylet having a localization element configured for tracking by a navigation system, wherein when the stylet is received in the lumen of the cannula the closed distal end of the stylet is positioned proximally of the closed distal end of the cannula and a circumferential space is defined between the wall of the stylet and the wall of the cannula and wherein when the stylet is received in the lumen of the cannula the localization element is positioned within the lumen of the cannula distally from at least some of the plurality of openings in the distal portion of the wall of the cannula;
• and
• a port in fluid communication with the circumferential space, wherein fluid including a dye injected into the port flows through the circumferential space and exits the cannula through the plurality of openings into the targeted tissue.