Marshall CT Classification

Category

CT findings

Mortality (%)[^2]

I - Diffuse injury

• No visible pathology

6,4 %

II - Diffuse injury

• Midline shift up to 5 mm

• Basal cisterns visible

• No hyperdense (or mixed-density) lesions greater than 25 cm³, including bone fragments and foreign bodies

11%

III - Diffuse injury (swelling)

• Midline shift up to 5 mm

• Basal cisterns compressed or completely effaced.

29 %

IV - Diffuse injury (shift)

• Midline shift > 5 mm

• No hyperdense (or mixed-density) lesions greater than 25 cm³, including bone fragments and foreign bodies

44 %

V - Evacuated mass lesion

• Any surgically evacuated lesion

30 %

V - Non-evacuated mass lesion

• Hyperdense (or mixed-density) lesions greater than 25 cm³, including bone fragments and foreign bodies

• No surgical evacuation

34 %