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[Absence of the vena cava inferior during simultaneous absence of the left kidney in a human fetus].

Atypical pattern of inferior cava (human embryo, sex: male, age: 6 month) is described. The left kidney is absent. The pelvis of the right kidney send two ureters to bladder. Pars hepatica of normal V. cava inferior is missed. Blood transport is formed by a vessel lateral of left suprarenal gland. This vessel is penetrating through pars lumbalis of diaphragm to thorax, goes in analogy to V. hemiazygos later to V. hemiazygos accessoria and flows into the right atrium.