Superficial inguinal lymph nodes

The superficial inguinal lymph nodes form a chain immediately below the inguinal ligament.

They lie deep to Camper's fascia which overlies the femoral vessels at medial aspect of the thigh.

They are found in the triangle bounded by the inguinal ligament superiorly, the border of the sartorius muscle laterally, and the adductor longus muscle medially. (Femoral Triangle of Scarpa)