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Table 1 AAST Spleen Trauma Classification

From: Splenic trauma: WSES classification and guidelines for adult and pediatric patients

Grade

Injury description

I

Hematoma

Subcapsular, < 10% surface area

Laceration

Capsular tear, < 1 cm parenchymal depth

II

Hematoma

Subcapsular, 10–50% surface area

 

Intraparenchymal, < 5 cm diameter

Laceration

1–3 cm parenchymal depth not involving a perenchymal vessel

III

Hematoma

Subcapsular, > 50% surface area or expanding

 

Ruptured subcapsular or parenchymal hematoma

 

Intraparenchymal hematoma > 5 cm

Laceration

> 3 cm parenchymal depth or involving trabecular vessels

IV

Laceration

Laceration of segmental or hilar vessels producing major devascularization (> 25% of spleen)

V

Laceration

Completely shatters spleen

Vascular

Hilar vascular injury which devascularized spleen