Osteoid Osteoma of the Maxilla Presenting as Dental Implant Pain

Figure 5

H&E-stained histopathologic slides of the excised specimen showing (a) a well-circumscribed and highly vascular tumor surrounded by a thick ring of mature bone. (b) The tumor composed of dilated blood vessels, area of hemorrhage, and numerous scattered irregular calcifications embedded in a fibrous stroma. (c) Cellular fibrous connective tissue containing irregular bony trabeculae. Area of hemorrhage is present. (d) The bony trabeculae are acellular, and the stroma contains plumped osteoblasts with ample cytoplasm and hyperchromatic nuclei.

(a)

(b)

(c)

(d)