Lymphatic Drainage of Abdominopelvic Organs: Summary

by James Pickering, PhD

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    00:01 So in summary you can, and we will go through this specific lymphatic drainage of the organs in a few slides time but even if you just take home this kind of general summary of the lymphatic drainage.

    00:15 Ultimately everything is going to end up in the venous system at the junction between the left internal jugular and subclavian veins.

    00:24 And to do that it runs within the thoracic duct which is continuous with the cisterna chyli. We can see the cisterna chyli here this dilated sac and then it going to pass up as the internal sorry, as the thoracic duct through the thorax.

    00:42 But we can see that we have these pre-aortic intestinal lymphatic trunks and with these are drained the organs of the gastrointestinal tract So these are coming from the GI tract. This specific pyloric lymph nodes, hepatic lymph nodes, splenic lymph nodes pick the organ, workout if it is foregut, midgut, hindgut and ultimately it'll pass to that lymph node around that main arterial supply. And then we have the retroperitoneal pelvic organs.

    01:18 And these pass one way or another into the lumbar lymphatic trunks.

    01:23 These run either side of the aorta so they're known as the para-aortic lymph nodes.

    01:29 These two converge to form a cisterna chyli which as we have said passes ultimately via the thoracic duct into the venous system.

    01:40 So we have got a few tables now which really conserve as reference for how these organs give rise to their lymphatic blood vessels and how they ultimately end up into the thoracic duct.

    01:56 So we can see we have got the stomach passes into a whole series of lymph nodes associated with the stomach but ultimately it passes into the coeliac lymph nodes.

    02:10 Duodenum, the jejunum, the ileum, the ceacum various parts of the colon, are all parts of the midgut.

    02:18 So these will ultimately by way of their various lymph nodes, pass into the superior mesenteric lymph node.

    02:26 And then the descending and sigmoid colon, the superior aspect of the rectum will pass because they are associated with the hindgut, into the inferior mesenteric lymph nodes.

    02:39 These will all pass via the intestinal lymphatic trunks up to the cisterna chyli.

    02:48 If we carry on looking at the specific organs. Then organs such as the pancreas the spleen, the liver and gallbladder. These are associated primarily with the foregut with the pancreas. Remember we had a bit of superior mesenteric blood supply So these are going to pass to the respective lymph nodes, coeliac primarily.

    03:10 As I said little bit superior mesenteric for the head and the uncinate process of the pancreas.

    03:16 And these will pass because they are part of the gastrointestinal tract to the intestinal lymphatic trunks.

    03:24 If we then look at the kidneys, suprarenal glands, ureters that lie retroperitoneal then the kidneys will pass to the lumbar lymph nodes.

    03:36 via some lymphatic vessels. As will the suprarenal glands.

    03:40 The ureters along their course, will drain in as they follow the posterior abdominal wall and they pass into lumbar lymph nodes; may be via internal, external, common iliac. But ultimately passing into the lumbar lymph node.

    03:55 And these goes onto the lumbar trunks, quite separate.

    03:59 These para-aortic lymph node, quite separate from the pre-aortic.

    04:07 Looking at the pelvis, bladder, the superior part of the bladder the fundus, maybe slightly different with the internal iliac. But the ductus deferens the seminal vesicles, the prostate all drains into the internal iliac.

    04:22 The scrotum, as I have mentioned previously, that is going to drain into the superficial inguinal.

    04:28 The testes within the scrotum are going to be different; because of their origin up near the kidney on the posterior abdominal wall the lymphatic drainage was already established when they were developing, so went into the lumbar just like the kidneys.

    04:44 So even though it's within the scrotum, it passes to a different lymphatic region.

    04:52 Superficial inguinal, the external iliac common iliac and these then form the lumbar trunk, para-aortic lymph nodes In the female we have got the vagina. We have got the uterus.

    05:07 These pass into internal, external iliac. These will ultimately go onto the common iliac.

    05:13 The ovaries and the uterine tubes. Remember the ovaries took a similar course to the testes but didn't end up passing through the inguinal canal but they did actually migrate down and before their migration, the lymph was established.

    05:31 So similar to the testes they pass into the lumbar.

    05:35 We then got the rectum, the inferior part of the rectum and the superior part of the anal canal and these are passing into the internal iliac. Inferior passes into a separate lymphatic system. It passes into the superficial inguinal.

    05:55 It is associated with the surface of the skin just like the scrotum. The skin via the pectinate line, inferior to the pectinate line drains into a different location.

    06:05 Ultimately though they all aggregating to the same place via the external, common and then into the lumbar trunks.

    06:16 So you can depending on how much you need to know, you can look at the specific lymphatic drainage for the specific organ.

    06:23 Or you can understand the retroperitoneal and subperitoneal pelvic organs drain into these lumbar.

    06:30 Whereas organs of the gastrointestinal tract would drain in to the intestinal. And that's really what the conclusion is.

    About the Lecture

    The lecture Lymphatic Drainage of Abdominopelvic Organs: Summary by James Pickering, PhD is from the course Pelvis.

    Included Quiz Questions

    1. Superficial inguinal
    2. Deep ingunal
    3. Internal iliac
    4. External iliac
    5. Lumbar
    1. Lumbar
    2. Superficial inguinal
    3. Deep inguinal
    4. Internal iliac
    5. External iliac

    Author of lecture Lymphatic Drainage of Abdominopelvic Organs: Summary

     James Pickering, PhD

    James Pickering, PhD

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