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[Duplication of the external and common iliac veins with a venous trunk anterior to the artery (author's transl)].

Short duplications of the stem forming an island where the artery crosses it have been described as isolated variants of the v. iliaca communis. V. iliaca externa and interna opening into the vena cava separately and a femoral vein opening into the ipselateral internal iliac vein are isolated observations of irregular junctions. An observation of duplication of the v. iliaca externa and to some extent also of the v. iliaca communis with concomitant duplication of the v. femoralis is reported, one of the two iliac venous trunks taking a course ventral to the external and common iliac arteries. These numerical abnormalities in combination with the irregular position of the v. iliaca externa and partly also of the common iliac vein are observed here for the first time.