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Multiple variations in the pelvic vasculature - a case report
Satheesha B Nayak1, Surekha D Shetty2, Srinivasa Rao Sirasanagandla2
1Professor, Department of Anatomy, Melaka Manipal Medical College, Manipal University , Madhav Nagar, Manipal, Karnataka, India .
Insights
This study details unusual pelvic vascular anatomy in a male cadaver, highlighting variations in the iliolumbar, internal iliac, and obturator arteries. Understanding these pelvic vasculature variations is crucial for surgical precision.
Area of Science:
- Anatomy
- Vascular Surgery
- Medical Imaging
Background:
- Accurate anatomical knowledge of pelvic vasculature is vital for various medical specialists.
- Variations in pelvic blood vessels can complicate surgical procedures and diagnostic interpretations.
Observation:
- Multiple vascular anomalies were identified in the left pelvic half of an adult male cadaver.
- Specific variations included the origin of the iliolumbar artery and branching patterns of the internal iliac artery's divisions.
- The obturator artery originated from the inferior epigastric artery, a notable deviation from typical anatomy.
Findings:
- The internal iliac artery exhibited atypical branching, with its posterior division supplying lateral sacral and superior gluteal arteries.
- The anterior division gave rise to the superior vesical, inferior vesical, inferior gluteal, and internal pudendal arteries.
- The internal pudendal artery formed a common trunk before bifurcating into the middle rectal and deep artery of the penis. Pelvic veins formed a complex plexus, draining into anterior and posterior divisions of the internal iliac vein and directly into the common iliac vein.
Implications:
- Documented vascular variations provide critical data for anatomical studies and surgical planning.
- Enhanced understanding of pelvic vascular anomalies can improve outcomes in urological, gynecological, and orthopedic surgeries.
- Radiologists and surgeons benefit from this detailed anatomical description for accurate diagnosis and intervention.
Abstract:
A thorough knowledge of possible variations of pelvic vasculature is very useful for surgeons, gynaecologists, radiologists, urologists and orthopaedic surgeons. We report multiple vascular variations in the left half of the pelvis of an adult male cadaver. Iliolumbar artery arose from the main trunk of the internal iliac artery. Posterior division of the internal iliac artery gave two lateral sacral arteries and a superior gluteal artery. The anterior division of the internal iliac artery gave origin to superior vesical, inferior vesical, inferior gluteal and internal pudendal arteries. The internal pudendal artery gave origin to a common trunk before leaving the pelvis. The common trunk divided into middle rectal artery and deep artery of the penis. The obturator artery took origin from the inferior epigastric artery and descended downward to the pelvis and left the pelvis by passing through the obturator foramen. Most of the other veins accompanying the arteries joined to form a plexus on the superior surface of the pelvic diaphragm. This plexus condensed to form anterior and posterior divisions of the internal iliac vein. Apart from this, the posterior part of the plexus drained directly into the common iliac vein through a large unnamed vein.
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