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FIG 2. T1-weighted coronal view and T2-weighted midsagittal view MR images show a rare example of an epileptogenic hamartoma located entirely below the floor of the third ventricle. The attachment of this small (6 x 5 x 8 mm diameter) hamartoma is narrowed at the level of the tuber cinereum, and a connection to the right mammillary body can be seen in the sagittal view image, but no distortion of third ventricular outline. This 12-year-old female patient had episodes of crying and laughing from 3 months of age, with increased seizure frequency and associated blank staring, disorientation, and fearfulness from age 9 years; interictal EEG findings were initially normal, but the patient later developed right occipital epileptiform discharges during sleep.
