Anomalous Post Caval Veins in a Cat

Author Institution: Zoology Department, University of IllinoisAnomalous Post Caval Veins in a Cat.11 A description is presented of an adult Cat with paired Post Caval Veins, Vena Cava Posterior or Inferior. These extend, without any other anastomosis, anteriorly, to a point between the two kidneys, and from there continue as one vessel. This point of fusion is three and one-half inches anterior to the usual junction of the leg vein, Iliacs. The left ovarian vein joins the left one of the Post Cavae at a level posterior to the kidney of that side, instead of being a continuation of the left renal vein. The Ureters extend from a dorso-lateral to a ventro-lateral position between the paired Post Cavalveins. This blood vessel pattern is interpreted as the AD" type of Huntington and McClure, the main feature of which is the persistence of embryonic Post Cardinal veins. A labeled photograph accompanies this described variation