Cisterna chyli: a detailed anatomic investigation

Area of Science:

• Anatomy
• Surgical Anatomy
• Lymphatic System

Background:

• Laparoscopic surgery advancements necessitate detailed knowledge of major lymphatic structures.
• The cisterna chyli (CC) and thoracic duct (TD) are critical for avoiding surgical complications.
• Variations in CC anatomy can lead to misdiagnosis and iatrogenic injury.

Purpose of the Study:

• To delineate the topography of the cisterna chyli (CC).
• To classify patterns of CC lymphatic tributaries.
• To categorize the CC's location relative to vertebral bodies.

Main Methods:

• Anatomical examination of 120 adult human cadavers.
• Detailed observation of the cisterna chyli (CC) and its associated lymphatic vessels.
• Classification of CC tributary patterns and vertebral level location.

Main Results:

• The cisterna chyli (CC) was identified in 83.3% of specimens.
• Four distinct tributary patterns (Types I-IV) were classified, with Type I (45%) being most common.
• CC location varied significantly, with 63% at L1-L2 (Type A) and 75% to the right of the abdominal aorta.

Conclusions:

• Significant anatomical variations exist in the cisterna chyli (CC) and its tributaries.
• This detailed topographical data is vital for anatomical, radiological, and surgical practice.
• Enhanced understanding of CC anatomy improves surgical safety in retroperitoneal and thoracic procedures.