Hepatic Notch

The ligamentum teres notch is an indentation in the inferior hepatic margin situated between the lateral and medial segments of the left lobe. Consequently, it can be visualized as an inverted V-shaped lucency in the right upper quadrant, with its superior borders delimiting the liver edge5,16 (Fig. 7-18). The ligamentum teres, if outlined with air, may be seen directed toward the notch.

Barnard Loop

A lucent collection in the left lower quadrant (arrow) represents free air between a bowel loop and the lateral peritoneal wall. The "base" of the extraluminal triangle is less distinct than the other two borders.

Hepatic Edge Sign

Fig. 7-17. Hepatic edge.

Two examples of free air depicting an outline of a portion of the anterior inferior hepatic edge, manifested by a crescentic lucency (arrow) in a and slitlike lucencies (arrows) in b. Note also the bas relief sign in a and the diffuse lucency over the liver in b.

Fig. 7-17. Hepatic edge.

Two examples of free air depicting an outline of a portion of the anterior inferior hepatic edge, manifested by a crescentic lucency (arrow) in a and slitlike lucencies (arrows) in b. Note also the bas relief sign in a and the diffuse lucency over the liver in b.

Fig. 7-18. Hepatic notch.

Inverted V-shaped gas collection delineates the ligamentum teres notch (curved arrow) in the inferior border of the liver between the medial and lateral segments of the left lobe. Note also the well-defined hepatic edges (arrowheads).

Fig. 7-18. Hepatic notch.

Inverted V-shaped gas collection delineates the ligamentum teres notch (curved arrow) in the inferior border of the liver between the medial and lateral segments of the left lobe. Note also the well-defined hepatic edges (arrowheads).

Ligament Teres Notch Liver

A large free air collection in the midsubphrenic space is clearly seen as a diffuse lucency high in the epigastrium with a sharply defined superior border curving downward (arrowheads). Inferiorly, the lucency is typically open without a demarcation. Note that the falciform ligament (arrow) is contiguous with the superior border.

A large free air collection in the midsubphrenic space is clearly seen as a diffuse lucency high in the epigastrium with a sharply defined superior border curving downward (arrowheads). Inferiorly, the lucency is typically open without a demarcation. Note that the falciform ligament (arrow) is contiguous with the superior border.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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