Microsurgical anatomy of foramen caecum posterius (Vicq d’Azyr foramen): importance for vascular neurology and neurosurgery

Of 15 fresh cadavers, we studied the pontomedullary junction regarding the arterial source and variations, in the called Vicq d’Azyr foramen. This small triangular depression at the lower boundary of the pons between the pyramids that marks the upper limit of the anterior median fissure of the medulla oblongata is the foramen caecum medullae oblongatae, or Vicq d`Azyr foramen. The results showed a basilar artery of diameter of 6.22mm, 12.37 perforators to the mentioned area, mainly having their origin from basilar artery. The importance of studying this area is to better understand the neurovascular diseases of brain stem and serve as a guide forneurosurgeons operating in this vital area.