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. 2021 Oct 6;12:504. doi: 10.25259/SNI_382_2021

Figure 4:

Figure 4:

Permanent section showing cystic lesion with fibrous capsule surrounding nonneoplastic adenohypophysis (a). Higher magnification shows squamous epithelial metaplasia (b). Higher magnification of a different section shows a pseudostratified ciliated columnar epithelium (c). A lower magnification shows fibrosis with cholesterol cleft and old hemorrhage (d).