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Medical Definition of Nodi lymphatici postcavales
1. The chain of lymph nodes associated with the inferior vena cava; it is divided into three groups: nodi lymphatici cavales laterales on the right of the inferior vena cava; nodi lymphatici precavales, in front of the inferior vena cava; nodi lymphatici postcavales, under nodus lymphaticus, behind the inferior vena cava. Synonym: nodi lymphatici lumbales dextri, lumbar lymph nodes. (05 Mar 2000)