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Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-06-03
Submitted: 2020-03-05
Accepted: 2020-03-31
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Variations in the gonadal artery with a single common trunk: Embryological hypotheses by observation

H. Terayama, Y. Miyaki, N. Qu, S. Katsuki, R. Tanaka, K. Umemoto, N. Kosemura, K. Suyama, O. Tanaka, K. Sakabe
DOI: 10.5603/FM.a2020.0063
·
Pubmed: 32488854

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-06-03
Submitted: 2020-03-05
Accepted: 2020-03-31

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. 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. 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.

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Keywords

single common trunk, right testicular artery, vascular development, cadaver

About this article
Title

Variations in the gonadal artery with a single common trunk: Embryological hypotheses by observation

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2020-06-03

DOI

10.5603/FM.a2020.0063

Pubmed

32488854

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

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