PMC9110380_01
Initial head computed tomography revealed no hemorrhagic findings.
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Head computed tomography (CT) was performed and detected no abnormal finding [Figure 1].
Brain magnetic resonance imaging (FLAIR) on day 2 after head injury, it revealed no hemorrhagic lesions including contusion.
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Brain MRI also detected no abnormal findings as the previous head CT [Figure 2].
Head computed tomography on day 3 after head injury; it was appeared that left acute subdural hematoma with mass effect.
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ASDH with mass effect [Figure 3].
Postoperative images. Upper: Brain magnetic resonance imaging (FLAIR) showed hemostatic scar by monopolar coagulator (white arrow). Lower: Head computed tomography: Hematoma has been evacuated.
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Postoperative CT and MRI revealed no re-bleeding and indicated the bleeding point [Figure 4].