PMC4199459_01
Axial plain T1-weighted image of the brain at the level of pons shows a well-defined extraaxial homogenous hyperintense lesion measuring 4.2 by 2.7 centimeters anterior to brain stem and involving bilateral cerebellopontine angle cisterns.
poljradiol-79-356-g001.jpg
PMC4199459_01_poljradiol-79-356-g001.jpg
f1-poljradiol-79-356
Axial FLAIR image shows hyperintense signal.
poljradiol-79-356-g002.jpg
PMC4199459_01_poljradiol-79-356-g002.jpg
f2-poljradiol-79-356
Coronal T2-weighted image of the brain shows hypointense signal of the lesion as compared to the cerebrospinal fluid.
poljradiol-79-356-g003.jpg
PMC4199459_01_poljradiol-79-356-g003.jpg
f3-poljradiol-79-356
T2-weighted (Figure 3) image with no evidence of contrast enhancement (Figure 4A and 4B) and diffusion restriction (Figure 5). The option of NC versus white epidermoid was presented. The patient was subjected to surgery and the lesion was excised.
Contrast-enhanced axial (A), and sagittal (B) T1-weighted images of the brain show nonenhancement of the mass and cyst size of 4.2 centimeters in craniocaudal dimension (B).
poljradiol-79-356-g004.jpg
PMC4199459_01_poljradiol-79-356-g004.jpg
f4-poljradiol-79-356
T2-weighted (Figure 3) image with no evidence of contrast enhancement (Figure 4A and 4B) and diffusion restriction (Figure 5). The option of NC versus white epidermoid was presented. The patient was subjected to surgery and the lesion was excised.
Axial diffusion image shows no evidence of intralesional diffusion restriction.
poljradiol-79-356-g005.jpg
PMC4199459_01_poljradiol-79-356-g005.jpg
f5-poljradiol-79-356
T2-weighted (Figure 3) image with no evidence of contrast enhancement (Figure 4A and 4B) and diffusion restriction (Figure 5). The option of NC versus white epidermoid was presented. The patient was subjected to surgery and the lesion was excised.
Photomicrographs show cyst lining composed of cuboidal cells.
poljradiol-79-356-g006.jpg
PMC4199459_01_poljradiol-79-356-g006.jpg
f6-poljradiol-79-356
Histopathologically, multiple sections showed a cyst lined with cuboidal to flattened cells and columnar cells sometimes (Figure 6).
Immunohistochemistry shows negative staining with Glial Fibrillary Acidic Protein.
poljradiol-79-356-g007.jpg
PMC4199459_01_poljradiol-79-356-g007.jpg
f7-poljradiol-79-356
Immunohistochemistry with Glial Fibrillary Acidic Protein (GFAP) was negative (Figure 7).