FIG 1. Images from the case of a 1-year-old male patient with macrocephaly and mild facial dysmorphism (case 1).

A, Sagittal view T1-weighted MR image shows tubomammillary fusion (arrow).

B, Coronal view T1-weighted MR image shows the bright signal intensity in the posterior pituitary of a duplicated gland.

C, Frontal projection time-of-flight MR angiogram shows the distal split of the basilar artery (arrow).