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Spleen : AAST organ injury scale

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History

AAST organ injury scale for splenic injuries

 

Grade I

Hematoma :Subcapsular, nonexpanding, <10% surface area

Laceration: Capsular tear, nonbleeding, <1cm parenchymal depth

 

Grade II

Hematoma: Subcapsular, nonexpanding, 10-50% surface area - Intraparenchymal, <10 cm diameter, nonexpanding

Laceration: Capsular tear, 1-3 cm parenchymal depth, <10 cm length

 

Grade III

Hematoma: Subcapsular, >50% surface area or expanding - Ruptured subcapsular or parenchymal hematoma - Intraparenchymal hematoma >10 cm or expanding

Laceration : > 3 cm parenchymal depth

 

Grade IV

Laceration: Parenchymal disruption involving 25-75% of hepatic lobe or 1-3 Couinaud’s segments within a single lobe

 

Grade V

Laceration: Parenchymal disruption involving >75% of hepatic lobe or >3 Couinaud’s segments within single lobe

 

Vascular: Juxtahepatic venous injuries; i.e., retrohepatic vena cava/central major hepatic veins - Hepatic avulsion

! Advance one grade for multiple injuries to same organ up to grade III

See results

Author
Dr Antoine Micheau
Organization
CHU Arnaud de Villeneuve
Channel
Radiological classifications commonly used in medical imaging
Splenic injuries splenic-injury-AAST-injury-scale

splenic-injury-AAST-injury-scale