Diagnostic Ultrasound - Abdomen and Pelvis

Peritoneal Spaces and Structures
Anatomy: Abdomen
LEFT SUPRAMESOCOLIC SPACE
Falciform ligament
Fluid in supramesocolic space
Left portal vein
Caudate lobe
Inferior vena cava
Vertebral body
Fluid in left subphrenic space
Spleen
Left hemidiaphragm
Left kidney
Left pleural effusion
Left lobe of liver
Lesser sac fluid
Perisplenic fluid
Septation
Splenorenal ligament
Inferior spleen
(Top) Subxiphoid transverse grayscale ultrasound shows fluid anterior to the left lobe of the liver that is localized to the left, posterior
subhepatic space. Incidental calculi are seen within a dilated intrahepatic biliary duct. (Middle) Longitudinal grayscale ultrasound of the
left upper quadrant shows a small amount of perisplenic fluid extending under the left hemidiaphragm. The left subphrenic space is
separated from the right subphrenic space by the falciform ligament. (Bottom) Transverse grayscale ultrasound of the left upper
quadrant reveals fluid in the perisplenic space and lesser sac.
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