Endoscopic sentinel lymph node biopsy in a porcine model.

Objective: The objective of this study was to investigate the feasibility of endoscopic sentinel lymph node biopsy in a porcine model.

Methods: One hundred microcuries of technetium-labeled sulfa colloid (Tc-SC) was injected into the right and left ventrolateral surfaces of the oral tongue of six adult Yorkshire pigs. A handheld gamma probe was used to locate the region of focal radioactivity on the neck that corresponded to the sentinel lymph node (SLN).