Honma Satoru, Kudo Motoi
Department of Anatomy, Division of Morphological Neuroscience, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Shiga, 520-2192, Japan.
Surg Radiol Anat. 2012 Jan;34(1):93-5. doi: 10.1007/s00276-011-0856-0. Epub 2011 Jul 21.
We observed a rare case of the middle suprarenal artery branching out from the superior mesenteric artery in a 78-year-old male. This atypical artery enters the right suprarenal gland that was also supplied by the superior and the inferior suprarenal arteries as usual. In embryonic stages, vasculature of the vitelline system and the gonadal system is differentially organized. The superior mesenteric artery has been generally thought to be pure vitelline, since there has been no evidence that the superior mesenteric artery supplies other organs than digestive. We then speculate that the present middle suprarenal artery is a remnant of the embryonic gonadal artery from the superior mesenteric artery, whereas a stem artery to the testis disappeared. Surgeons should take notice of the middle suprarenal artery when operations are conducted around the superior mesenteric artery.
我们观察到一例罕见病例，一名78岁男性的中肾上腺动脉发自肠系膜上动脉。这条非典型动脉进入右侧肾上腺，该肾上腺通常也由肾上腺上动脉和肾上腺下动脉供血。在胚胎发育阶段，卵黄囊系统和性腺系统的血管分布有所不同。肠系膜上动脉通常被认为是纯粹的卵黄囊血管，因为没有证据表明肠系膜上动脉除了为消化系统供血外还为其他器官供血。我们推测，目前的中肾上腺动脉是胚胎期来自肠系膜上动脉的性腺动脉的残余，而通往睾丸的主干动脉消失了。外科医生在肠系膜上动脉周围进行手术时应注意中肾上腺动脉。
