Lymph Node Anatomy Waldeyer Ring, Pre-auricular, Cervical, Occipital, Supraclavicular, Infraclavicular, Pectoral, Axillary, Mediastinal, Hilar, Epitrochlear, Brachial, Spleen, Mesenteric, Paraaortic, Iliac, Inguinal, Femoral, Popliteal #Lymph #Node #Anatomy #diagnosis #lymphadenopathy