Case Report

Osteoma of the Medial Wall of the Maxillary Sinus: A Primary Cause of Nasolacrimal Duct Obstruction and Review of the Literature

Figure 3

Histological examination (analysis X2,5) of this slow-growing, bone-forming tumor revealed the presence of dense, compact mature bone in paucicellular fibrous stroma. Large trabeculae of mature, lamellar bone can be seen: mature bone (big arrow) and fibrous stroma (small arrow).