THE LYMPHATICS OF THE PELVIS AND ABDOMEN 791 



The sacral nodes belong to this group, but are placed in the concavity of the 

 sacrum; they receive lymphatics from the rectum and posterior wall of the pelvis. 



The common iliac nodes are found abodt the common iliac artery and are 

 divided into an external group, which lies upon the inner edge of the Psoas 

 muscle 1 ; a middle group, behind the artery, and an internal group, which lies upon 

 the front of the body of the fifth lumbar vertebra or upon the sacrovertebral 

 junction. They receive vessels from the external and internal iliac nodes and 

 their ett'erents pass to the lateral aortic nodes. 



RIGHT LATERAL 

 AORTIC 



LEFT LATERAL 

 AORTIC 



COMMON 

 ILIAC 



DE IN FRONT ' 



OF SACRAL , 



RONIONTORY \ 



3MMON ILIAC 



kiddle group) 



OBTURATOR 

 ARTERY 



COMMON ILIAC 



EXTERNAL ILIAC 



EXTERNAL ILIAC 



(middle chain) 



OBTURATOR 

 NERVE 

 OBTURATOR 

 ARTERY 



EXTERNAL 

 ILIAC 



OBTURATOR 

 NODE 



1! 



FIG. 567. Iliopelvic lymph nodes. (Poirier and Charpy.) 



The lumbar nodes (h/mphoglandulae lumbales] are very numerous, and consist 

 of right and left lateral aortic, preaortic, and retroaortic groups. 



The right lateral aortic nodes are situated partly in front of the inferior vena 

 cava, near the termination of the renal vein, and partly behind it on the origin 

 of the Psoas, and on the right crus of the Diaphragm. The left lateral aortic 

 nodes form a chain on the left side of the abdominal aorta in front of the origin 

 of the Psoas and left crus of the Diaphragm. The nodes on either side receive 

 (a) the efferents of the common iliac nodes; (6) the lymphatics from the testicle 

 in the male and from the ovary, Fallopian tube, and body of the uterus in the 

 female; (c) the lymphatics from the kidney and suprarenal body; and (d) the 



