Computed Tomographic and Magnetic Resonance Imaging Findings in the Midline Nasopharyngeal Glial Heterotopia

The glial Heterotopia is a rare developmental abnormality in the nasopharynx. We report two girls with this lesion. CT and MR imaging demonstrated an ovoid heterogeneously pedunculated mass attached to the left nasopharyngeal wall by a stalk of fibrous tissue, with no extension into the cranial vault. Scattered patchy fat tissues and pituitary tissues found in the glial heterotopia in one case were reported for the first time. Multiplanar images with multidetector CT, especially sagittal CT images never reported in the glial Heterotopia, might be very helpful in evaluating the adhesion between the mass and the structures in the nasopharynx, whether the bony defect of the skull base, and whether the communication between the mass and the intracranial structures.