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Variations in the gonadal artery with a single common trunk: embryological hypotheses by observation
, 1, 1, 12, 12, 1, 1, 1, 1, 1
Affiliations- Department of Anatomy, Division of Basic Medicine, Tokai University School of Medicine, Kanagawa, Japan
- Department of Rehabilitation, Kanto Rosai Hospital, 1-1 Kizuki Sumiyoshi-cho, Nakahara-ku, Kawasaki-si, Kanagawa, Japan
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Abstract
Background: A gonadal artery originates as a branch of the abdominal aorta and renal artery inferior to the level of origin of the renal arteries. Variations in multiple right testicular arteries (RTAs) arising from the abdominal aorta are common. We aimed to re-evaluate the unusual courses of gonadal arteries with a single common trunk in relation to the inferior vena cava and left renal vein and explain the developmental anatomy. Materials and methods: The observational cross-sectional study was performed on 54 Japanese adult cadavers (29 men and 25 women). We examined the literature and developed embryological hypotheses on the single common trunk of the gonadal artery. Results: The gonadal artery, testicular artery, and ovarian artery arose from the abdominal aorta in 93.1%, 96.3%, and 89.6% of cases, respectively, and from the renal artery in 4.9%, 3.7%, and 6.3% of cases, respectively. We found two rare variations in the RTAs observed during the routine dissection of two male cadavers; in these two cases, a single common trunk of the RTAs originated from the abdominal aorta. A single common trunk was found in 3.7% of cadavers, 2.0% of sides, and 2.0% of arteries in the gonadal artery and in 6.9% of cadavers, 3.8% of sides, and 3.7% of arteries in the testicular artery. All cases of the single common trunk, including those in past reports, were observed only in men. Conclusions: Knowledge of the variations in RTAs has important clinical consequences for invasive and non-invasive arterial procedures. In addition, this variation provides a new interpretation of the embryology of the gonadal artery. Variations similar to our findings have not been previously reported. Therefore, different variations concerning the RTA should be considered during surgical and non-surgical evaluations.
Abstract
Background: A gonadal artery originates as a branch of the abdominal aorta and renal artery inferior to the level of origin of the renal arteries. Variations in multiple right testicular arteries (RTAs) arising from the abdominal aorta are common. We aimed to re-evaluate the unusual courses of gonadal arteries with a single common trunk in relation to the inferior vena cava and left renal vein and explain the developmental anatomy. Materials and methods: The observational cross-sectional study was performed on 54 Japanese adult cadavers (29 men and 25 women). We examined the literature and developed embryological hypotheses on the single common trunk of the gonadal artery. Results: The gonadal artery, testicular artery, and ovarian artery arose from the abdominal aorta in 93.1%, 96.3%, and 89.6% of cases, respectively, and from the renal artery in 4.9%, 3.7%, and 6.3% of cases, respectively. We found two rare variations in the RTAs observed during the routine dissection of two male cadavers; in these two cases, a single common trunk of the RTAs originated from the abdominal aorta. A single common trunk was found in 3.7% of cadavers, 2.0% of sides, and 2.0% of arteries in the gonadal artery and in 6.9% of cadavers, 3.8% of sides, and 3.7% of arteries in the testicular artery. All cases of the single common trunk, including those in past reports, were observed only in men. Conclusions: Knowledge of the variations in RTAs has important clinical consequences for invasive and non-invasive arterial procedures. In addition, this variation provides a new interpretation of the embryology of the gonadal artery. Variations similar to our findings have not been previously reported. Therefore, different variations concerning the RTA should be considered during surgical and non-surgical evaluations.
Keywords
single common trunk, right testicular artery, vascular development, cadaver
About this articleTitle
Variations in the gonadal artery with a single common trunk: embryological hypotheses by observation
Journal
Issue
Article type
Original article
Pages
324-330
Published online
2020-06-03
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1239
Article views/downloads
1403
DOI
Pubmed
Bibliographic record
Folia Morphol 2021;80(2):324-330.
Keywords
single common trunk
right testicular artery
vascular development
cadaver
Authors
H. Terayama
Y. Miyaki
N. Qu
S. Katsuki
R. Tanaka
K. Umemoto
N. Kosemura
K. Suyama
O. Tanaka
K. Sakabe
References (18)- Ciçekcibaşi AE, Salbacak A, Seker M, et al. The origin of gonadal arteries in human fetuses: anatomical variations. Ann Anat. 2002; 184(3): 275–279.
- Gray SW, Skandala JE. The superior and inferior venae cavae. In: Skandala JE (ed.). Embryology for surgeons. Saunders Company, Philadelphia 1972: 862–876.
- Itoh M, Moriyama H, Tokunaga Y, et al. Embryological consideration of drainage of the left testicular vein into the ipsilateral renal vein: analysis of cases of a double inferior vena cava. Int J Androl. 2001; 24(3): 142–152.
- Jordan HE, Kindred JA. The inferior vena cava. In: HE Jordan, JA Kindred (ed.). Textbook of embryology. Appleton-Century, New York 1932: 220–235.
- Kayalvizhi I, Narayan RK, Kumar P. Anatomical variations of testicular artery: a review. Folia Morphol. 2017; 76(4): 541–550.
- Kotian SR, Pandey AK, Padmashali S, et al. A cadaveric study of the testicular artery and its clinical significance. J Vasc Bras. 2016; 15(4): 280–286.
- Lippert H, Pabst R. Arterial variations in man: classification and frequency. 1st Ed. J F Bergman Verlag, Munich 1985.
- Machnicki A, Grzybiak M. Variations in testicular arteries in fetuses and adults. Folia Morphol. 1997; 56(4): 277–285.
- Machnicki A, Grzybiak M. Variations in ovarian arteries in fetuses and adults. Folia Morphol. 1999; 58(2): 115–125.
- Mao QH, Li J. Double right testicular arteries passing through the hiatus in the trifurcated testicular vein. Indian J Surg. 2017; 79(1): 73–74.
- Moore KL, Dalley AF. Clinically oriented anatomy, 4th ed. Lippincott Williams and Wilkins, Philadelphia 1999.
- Nallikuzhy TJ, Rajasekhar SS, Malik S, et al. Variations of the testicular artery and vein: A meta-analysis with proposed classification. Clin Anat. 2018; 31(6): 854–869.
- Onderoğlu S, Yüksel M, Arik Z. Unusual branching and course of the testicular artery. Ann Anat. 1993; 175(6): 541–544.
- Pansky B. Development of the venous system. In: Pansky B (ed). Review of medical embryology. Macmillan Publishing, New York 1932: 328–329.
- Rusu MC. Human bilateral doubled renal and testicular arteries with a left testicular arterial arch around the left renal vein. Rom J Morphol Embryol. 2006; 47(2): 197–200.
- Shinohara H, Nakatani T, Fukuo Y, et al. Case with a high-positioned origin of the testicular artery. Anat Rec. 1990; 226(2): 264–266.
- Tanyeli E, Uzel M, Soyluoğlu AI. Complex renal vascular variation: a case report. Ann Anat. 2006; 188(5): 455–458.
- Terayama H, Yi SQ, Naito M, et al. Right gonadal arteries passing dorsally to the inferior vena cava: embryological hypotheses. Surg Radiol Anat. 2008; 30(8): 657–661.
