Iliac lymph nodes

Iliac lymph nodes are a group of lymph nodes located in the pelvic region of the body. They are part of the lymphatic system, which is responsible for the removal of interstitial fluid from tissues. The iliac lymph nodes are divided into external and internal groups, each with their specific location and function.

External Iliac Lymph Nodes

The External iliac lymph nodes are located along the external iliac vessels. They receive lymph from the lymphatic vessels of the pelvic viscera, perineum, and lower abdominal wall. The efferent vessels from these nodes form the lumbar lymph nodes.

Internal Iliac Lymph Nodes

The Internal iliac lymph nodes are situated along the internal iliac vessels. They receive lymph from the gluteal region, pelvic viscera, perineum, and deep lymphatics of the abdominal wall. The efferent vessels from these nodes also form the lumbar lymph nodes.

Clinical Significance

The iliac lymph nodes are often involved in the spread of various cancers, including cervical cancer, prostate cancer, and colorectal cancer. Enlargement of these nodes, known as lymphadenopathy, can be a sign of metastasis or infection.

Lymph node biopsy or lymphadenectomy may be performed to diagnose or treat conditions involving the iliac lymph nodes. In some cases, radiation therapy or chemotherapy may be used to treat cancer that has spread to these nodes.

See Also

• Lymphatic system
• Lymph node
• Lymphadenopathy
• Lymphadenectomy