Definition of Node, sentinel lymph
Node, sentinel lymph: The first lymph node to receive lymphatic drainage from a tumor. The sentinel node for a given tumor is found by injecting a tracer substance around the tumor. This substance then travels through the lymphatic system to the sentinel node. The tracer subst
Last Editorial Review: 3/30/2012
Back to MedTerms online medical dictionary A-Z List
Need help identifying pills and medications?