Superficial inguinal nodes in superficial fascia below the inguinal ligament drain skin of the lower limb and perineum.
The superficial inguinal lymph nodes are a group of lymph nodes located in the superficial fascia of the upper thigh, just inferior to the inguinal ligament. These nodes form part of the peripheral lymphatic system and are responsible for draining the skin and superficial tissues of the lower limb, perineum, external genitalia, and lower abdominal wall. They are clinically important due to their accessibility and involvement in infections and malignancies affecting these regions.
The superficial inguinal nodes are numerous (typically 10–20) and oval in shape. They are embedded in the superficial fascia, just beneath the skin and fatty layer of the groin. These nodes are divided into two main groups based on their orientation relative to the inguinal ligament and great saphenous vein.
The superficial inguinal nodes lie within the femoral triangle in the upper thigh. They are located in the subcutaneous tissue superficial to the fascia lata and inferior to the inguinal ligament.
Group | Landmark |
---|---|
Horizontal | Just below and parallel to the inguinal ligament |
Vertical | Along the terminal part of the great saphenous vein as it enters the femoral vein |