Transpyloric plane

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Transpyloric Plane

The transpyloric plane is an important anatomical landmark in the human body. It is a horizontal plane that passes through the body at the level of the first lumbar vertebra (L1). This plane is significant in clinical anatomy because it intersects several key structures and organs.

Location and Boundaries

The transpyloric plane is located halfway between the suprasternal notch and the pubic symphysis. It typically lies at the level of the first lumbar vertebra (L1) and intersects the pylorus of the stomach, which is why it is named the transpyloric plane.

Structures Intersected

Several important anatomical structures are intersected by the transpyloric plane, including:

• The pylorus of the stomach
• The duodenum, specifically the first part
• The pancreas, particularly the neck
• The hilum of the kidneys
• The fundus of the gallbladder
• The origin of the superior mesenteric artery
• The cisterna chyli, which is part of the lymphatic system

Clinical Significance

The transpyloric plane is used as a reference point in various medical procedures and diagnostic techniques. It helps in locating the position of the pylorus, which is crucial for gastrointestinal surgeries. Additionally, it aids in identifying the position of the kidneys and the pancreas during imaging studies.

Related Anatomical Planes

Other important anatomical planes include:

• The transumbilical plane, which passes through the umbilicus and the intervertebral disc between L3 and L4.
• The subcostal plane, which lies at the level of the lower border of the tenth costal cartilage.
• The intertubercular plane, which passes through the iliac tubercles and the body of the fifth lumbar vertebra (L5).

See Also

• Anatomical terms of location
• Abdominal regions
• Surface anatomy

References

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