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Large rounded cyst in the right pontine region crossing the midline and slightly indenting the IVth ventricle. Predominantly hyperintense T2 signal within the lesion with low signal sediment with minor blooming on the B = 0 (EPI) sequence. On T1, the sediment is hyperintense and the rest of the contents isointense to brain tissue. No perifocal oedema. No contrast enhancement.