Figure 2.

An MRI 1 year before (a) and just before the operation showing the TSSM (b). The endoscopic view revealed a thickening of the mucosa over the sellar floor (white arrows) (c), and yellowish jelly-like fluid in the cyst (d). Hematoxylin and eosin staining of the sphenoid sinus mucosa shows inflammatory cells (e). The columnar epithelium with cilia and stratified squamous epithelium, infiltration of inflammatory cells adjacent to the cyst wall were noted in the extracted cyst wall (f). Chronic inflammatory cells are found in the pituitary gland (g)