PMC5655395_01
a: T1 sagittal image showing the HH which appears as a slight hypointense lesion above mammillary bodies.. b: T2 FLAIR coronal image showing the HH which appears hyperintense.. c: T2 transverse images showing the HH.
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A repeat MRI revealed a very small, 5 mm, area of signal abnormality in the midline just postero-superior to the tuber cinereum and above the mammillary bodies which was hyperintense on T2 and FLAIR sequences, consistent with a very small HH (Fig. 1).