Lymphatics of Retroperitonium and Pelvic Wall; Supracolic and Infracolic Organs Flashcards
Lymph nodes of the Retroperitoneum
- Pre-Aortic Lymph Nodes
- Right and Left Lateral Aortic Lymph Nodes (Lumbar/Para-Aortic Lymph Nodes)
- Retro-Aortic Lymph Nodes
- Cisterna Chyli
Pre-Aortic Lymph Nodes
o Consists of the coeliac, superior mesenteric and inferior mesenteric lymph nodes
o Located anterior to the abdominal aorta, scattered around the origin of the respective arteries
Right and Left Lateral Aortic Lymph Nodes (Lumbar/Para-Aortic Lymph Nodes)
o Located on the left and right side of the abdominal aorta
o Efferent vessels form the left and right lumbar lymphatic trunks
Retro-Aortic Lymph Nodes
o Located anterior to the bodies of L3 and L4
o Receive lymph from the pre-aortic and lateral aortic lymph nodes
o Efferent vessels drain to the cisterna chyli
Cisterna Chyli
o Drains into the thoracic duct
o Located anterior to L1 and L2
o Receives lymph from the intestinal trunk, right and left lumbar trunks, right and left inferior intercostal trunks
Coeliac Lymph Nodes
o Receive lymph from the Supracolic organs
Superior Mesenteric Lymph Nodes
o Receives lymph from the small and large intestine
Inferior Mesenteric Lymph Nodes
o Receives lymph from the large intestine
Intestinal Trunk Formation
• Efferent vessels from the pre-aortic lymph node groups form the intestinal trunk
What are the differing Lateral Aortic/Lumbar Lymph Nodes?
- Right Lateral Aortic/Lumbar Lymph Nodes
* Left Lateral aortic/lumbar lymph nodes
Right Lateral Aortic/Lumbar Lymph Nodes
o Located anterior to the IVC (to the right of the abdominal aorta)
• Left Lateral aortic/lumbar lymph nodes
o Located to the left of the abdominal aorta
Lateral Aortic/Lumbar Lymph Nodes: Lymphatic Flow
- Both groups receive lymph from the common iliac lymph nodes, ovaries/testes, uterus, kidneys, suprarenal glands and abdominal muscles
- Efferent vessels from the lateral/aortic lumbar lymph node groups from the right and left lumbar trunks
Lymph Nodes of the Pelvic Wall
- Sacral Lymph Nodes
- Internal Iliac Lymph Nodes
- External Iliac Lymph Nodes
- Common Iliac Lymph Nodes
Sacral Lymph Nodes
o Located anteriorly in the concavity of the sacrum
o Receive lymph from the posteroinferior pelvic viscera
o Efferent vessels drain to either the internal iliac lymph nodes or the common iliac lymph nodes
Internal Iliac Lymph Nodes
o Receive lymph from the pelvic viscera, perineum, and gluteal regions
o Efferent vessels drain into the common iliac lymph nodes
External Iliac Lymph Nodes
o Receive lymph from the deep inguinal lymph nodes, the inferior deep abdominal wall and some of the pelvic viscera
o Efferent vessels drain to the common iliac lymph nodes
Common Iliac Lymph Nodes
o Receive from the external iliac, internal iliac and sacral lymph node groups
o Efferent vessels drain into the lateral aortic/lumbar lymph nodes
Lymphatics of the Liver
- Liver produces a significant amount of lymph (approximately 1/3 to ½ of all lymph draining into the thoracic duct originating from the liver
- Drains into the hepatic lymph nodes or phrenic lymph nodes