Axillary Reverse Mapping

**Semantic type:** Diagnostic Procedure

**Definition:** A technique used to identify the lymph nodes that drain the upper arm. Like axillary or sentinel lymph node mapping a blue dye is injected into the upper volar subcutaneous tissue of the upper arm to map the lymphatic drainage of the area. The goal of ARM, however, is to preserve these nodes and the existing lymphatic drainage field.

**Synonyms:** - ARM - ARM Procedure - ARM Technique