Osteoma

A very common benign tumor is explained.
It is important to clearly differentiate the benign from the malignant.

1. OSTEOMA VISITH DANTANARAYANA 301

2. WHAT IS AN OSTEOMA? AN OSTEOMA IS A NEW PIECE OF BONE GROWING ON ANOTHER PIECE OF BONE. THEY CAN BE EITHER HOMOGENOUS OR HETEROGENOUS.

3. OSTEOMA OF EXTERNAL AUDITARY MEATUS

4. IN RELATION TO OTHER BONE TUMORS

5. SPECIFICITY THEY ARE MORE OFTEN PREVALENT IN THE PARANASAL SINUSES.

6. CLINICAL FEATURES PARANASAL OSTEOMAS ARE USUALLY ACCOMPANIED BY HEADACHES, FACIAL DISTORTIONS, CSF LEAKAGE.

7. DIAGNOSIS

8. MACROSCOPIC DESCRIPTION SESSILE, POLYPOID SHAPE MEDIAN SIZE 3.0 CM (RANGE 0.5-8 CM) SMOOTH, BOSSELATED SURFACE CUT SURFACE WITH DENSE COMPACT BONE (IVORY OSTEOMA), TRABECULAR BONE (MATURE OSTEOMA, OR BOTH PATTERNS)

9. OSTEOMA WITH SMOOTH BOSSELATED SURFACE. POLYPOID CHARACTER DENSE COMPACT BONE ON THE CUT SURFACE WITH TRABECULAE

10. MICROSCOPIC DESCRIPTION COMPOSED PRIMARILY OF DENSE, COMPACT BONE AND BROAD TRABECULAE OF MATURE BONE WITHIN PAUCICELLULAR FIBROUS STROMA OUTER SURFACE IS SHARPLY DEMARCATED AND LINED BY RESPIRATORY EPITHELIUM IN SINUS TUMORS AREAS RESEMBLING OSTEOBLASTOMA (NARROW, ANASTOMOSING TRABECULAE OF WOVEN BONE WITH OSTEOBLASTIC RIMMING WITHIN A FIBROVASCULAR STROMA) ARE COMMON (38%)

11. AREAS RESEMBLING OSTEOBLASTOMA

12. DENSE COMPACT BONE

13. INVASIVE LIKE TRABECULAE

14. TREATMENT

15. THANK YOU WITH COMPLIMENTS FROM CEYLON TEA