Which of the following is the classic CT appearance of an acute subdural hematoma –: (A) Lentiform–shaped hyperdense lesion, (B) Cresent–shaped hypodense lesion, (C) Cresent–shaped hyperdense lesion, (D) Lentiform–shaped hypodense lesion
Answer is C. Subdural hematoma


Cresent (concavo-convex) shaped
Hyperdense (2/3) or mixed (1/3) in acute cases
Isodense in subacute
Hypodense in chronic