A unique right gonadal artery origin and course with embryological implications: case report

Area of Science:

• Anatomy
• Vascular Biology
• Embryology

Background:

• Gonadal arteries, supplying testes and ovaries, exhibit significant anatomical variability.
• Standard medical texts describe typical origins and courses, yet numerous variations are documented.
• Understanding these variations is crucial for accurate anatomical knowledge and surgical planning.

Purpose of the Study:

• To report a rare variation in the origin and course of the right gonadal artery (RGA).
• To discuss the embryological implications of this RGA variation in relation to inferior vena cava (IVC) development.

Main Methods:

• A case study involving routine anatomical dissection of an 80-year-old female donor.
• Detailed observation and documentation of the RGA's origin, course, and relationship to surrounding structures, including the left renal vein and IVC.

Main Results:

• The RGA originated cranially from the right renal artery, posterior to the left renal vein.
• The anomalous RGA coursed inferior to the left renal vein and anterior to the IVC.
• This represents the third reported case of an RGA originating at or above the left renal vein and passing anterior to the IVC.

Conclusions:

• This case highlights the significant variability in gonadal artery anatomy.
• The findings support embryological hypotheses regarding the development of the IVC and associated vessels.
• Such anatomical variations necessitate careful consideration in clinical practice, particularly in vascular and gynecological procedures.