A 59-year-old man with a history of hypertension is brought to the emergency department in acute coma. His wife reports that he collapsed this morning at the breakfast table. Examination reveals a Glasgow coma scale of 3, pinpoint pupils reactive to light, and absent horizontal eye movement with head rotation. After resuscitation and stabilization, he is sent for further investigations.
Which of the following findings on this patient’s computed tomography scan is most likely?
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