case_images: PMC9996711_01
case_images: Prenatal fetal MR: T2-weighted images in the axial (A), coronal (B), and
  sagittal (C) planes demonstrate a small focal T2 hyperintense signal (white
  arrows), which extends from the skull base to the nasopharynx, consistent
  with the cephalocele. Agenesis of the corpus callosum is also present
  (B).
case_images: 10.1177_2329048X231157147-fig1.jpg
case_images: PMC9996711_01_10.1177_2329048X231157147-fig1.jpg
case_images: fig1-2329048X231157147
case_images: Twin B (Figure 1).
case_images: Postnatal MR: sagittal T2 image (A) and sagittal T1 MPRAGE (B) show a large
  defect consistent with a craniopharyngeal canal, with herniation of the
  adenohypophysis into the defect, which protrudes into the nasopharynx (blue
  arrows). Bilateral optic disc anomalies (C, white arrows) and agenesis of
  the corpus callosum (D) are also present.
case_images: 10.1177_2329048X231157147-fig2.jpg
case_images: PMC9996711_01_10.1177_2329048X231157147-fig2.jpg
case_images: fig2-2329048X231157147
case_images: AgCC, a large defect along the inferior sella turcica, consistent with the craniopharyngeal canal, with herniation of the adenohypophysis into a cephalocele protruding into the nasopharynx and mild hypertelorism with bilateral optic disc anomalies (Figure 2). A fundoscopic exam confirmed morning glory disc anomalies (Figure 3).
case_images: Fundus examination revealed a normal optic disc within a slight staphyloma in
  the right eye as well as normal macula and vessels. In the left eye, there
  was a Morning Glory Disc (large and excavated with vessels leaving from the
  side with the absence of central vasculature) surrounded by pigmentation
  (black arrow) that extended to the macula. Please see online publication for
  color images.
case_images: 10.1177_2329048X231157147-fig3.jpg
case_images: PMC9996711_01_10.1177_2329048X231157147-fig3.jpg
case_images: fig3-2329048X231157147
case_images: AgCC, a large defect along the inferior sella turcica, consistent with the craniopharyngeal canal, with herniation of the adenohypophysis into a cephalocele protruding into the nasopharynx and mild hypertelorism with bilateral optic disc anomalies (Figure 2). A fundoscopic exam confirmed morning glory disc anomalies (Figure 3).