Organ
Internal iliac lymph nodes
Lymphatic stations beside the internal iliac branches
High-yield
Internal iliac drainage is important for the cervix, prostate, lower rectum and deep perineum. These organs can also drain through other pelvic routes.
Overview
Internal iliac nodes receive lymph from pelvic organs and deep perineal and gluteal territories. They lie along the internal iliac vessels and connect with other pelvic chains. Sacral nodes form a neighboring posterior drainage group with overlapping organ territories.
Reference facts
- Location
- Along the internal iliac vessels on the pelvic sidewall; sacral nodes lie posteriorly near the sacrum.
- Parts
- Small groups follow visceral and parietal branches; sacral nodes are commonly listed as a separate regional basin.
- Drains from
- Receive portions of pelvic visceral, rectal, proximal anal, deep perineal and gluteal drainage.
- Venous/Lymphatic drainage
- Connect mainly with common iliac and neighboring external iliac pathways; sacral efferents also communicate with more superior chains.
- Function
- Monitor lymph arriving from deep pelvic and perineal tissues.
Clinical correlation
Because the nodes lie deep within the pelvis, their evaluation relies on imaging or pathological assessment. Their depth alone does not indicate how advanced an associated disease is.
Frequently asked questions
Where are the internal iliac lymph nodes located?
Along the internal iliac vessels on the pelvic sidewall; sacral nodes lie posteriorly near the sacrum.
What do the internal iliac lymph nodes do?
Monitor lymph arriving from deep pelvic and perineal tissues.
What are the parts of the internal iliac lymph nodes?
Small groups follow visceral and parietal branches; sacral nodes are commonly listed as a separate regional basin.
How do the internal iliac lymph nodes drain?
Connect mainly with common iliac and neighboring external iliac pathways; sacral efferents also communicate with more superior chains.