Case Report

Bilateral Postoperative Cyst after Maxillary Sinus Surgery: Report of a Case and Systematic Review of the Literature

Figure 8

(a) Histology: overview of the cystic tissue with focally intact epithelium and loose fibrotic stroma (haematoxylin and eosin; original magnification ×20). (b) Histology: cystic wall with thin, fibrotic, and partly edematous tissue. Little inflammatory infiltrate with granulocytes; cyst lined by a combination of stratified nonkeratinizing squamous epithelium and pseudostratified ciliated columnar epithelium (haematoxylin and eosin; original magnification ×20).