sacral lymph nodes sacral lymph nodes the sacral lymph nodes are placed in the concavity of the sacrum, in relation to the middle and lateral sacral arteries; they receive lymphatics from the rectum and posterior wall of the pelvis. sacral lymph nodessacral is #3detailssystemlymphatic systemdrains tocommon iliac lymph nodesidentifierslatinnodi lymphoidei sacralesanatomical terminology