congenital lesion consisting of a proliferation of columnar type epithelium in a pseudoacinar and papillary pattern Image

admixed with fat Image

embedded irregularly in a spindled stroma Image

stroma is intensely positive for smooth muscle actin Image

focal area of glial differentation Image

confirmed by strong GFAP staining Image

papillary areas lined by bland columnar cells arranged around a fibrovascular core, are remniscent of choroid plexus Image

lower power Image

columnar cell papillary/acinar areas merge imperceptible into stroma as round cells with abundant light pink cytoplasm arranged in cords Image

glial tissue in the upper portion of image, merges with the glandular areas; fascicular bundles noted towards the left likely smooth muscle Image

cystic dilatation Image

shows surface epithelium with underlying process Image

papillary area merges with a focus resembling excessive basement membrane as seen in some salivary neoplasms Image

neural? not sure Image