Clinical information:  The patient was a 54 year-old woman with a history of diabetes. She developed vomiting and frontal headache for two days. There was no history of trauma. As per the descriptions of her family members, she had a few episodes of starring into the left and was unresponsive. The patient described that she could remember all these episodes clearly. On physical examination, the patient was well oriented and alert. There was no weakness in the extremities, ophthalmoplegia, diplopia, reduced visual acuity or facial weakness. An MRI and a CT scan were performed and yielded the following representative images:

A.	B.	C.	D.	E.

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