We present the MRI findings of cerebral and optic pathway damage in the acute and subacute stages of methanol intoxication. In the acute stage, CT and MRI showed bilateral haemorrhagic necrosis of the corpus striatum and infarcts in the anterior and middle cerebral arterial territories. MRI in the subacute stage demonstrated atrophy of the optic chiasm and prechiasmatic optic nerves in addition to the cerebral infarcts. The patient survived, with total blindness.
We report MRI and angiographic findings of an unusual giant arachnoid granulation in the left sigmoid sinus in a boy with headache. Its signal intensity was lower than that of cerebral cortex on T1-weighted images and higher on T2 weighting, mimicking dural sinus thrombosis.
A 21-year-old man was examined for a right frontal skull mass that had been present for 4 months. Excision biopsy of the mass revealed diffuse large B-cell lymphoma. Subsequent studies showed right preauricular lymphadenopathy but no systemic involvement. The patient was treated with six courses of CHOP (cyclophosphamide, adriamycin, vincristine, and prednisolone) with adjuvant whole brain irradiation and achieved a complete remission.
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