OSTEOMAVISITH DANTANARAYANA301

WHAT IS AN OSTEOMA?AN OSTEOMA IS A NEW PIECE OF BONE GROWING ON ANOTHER PIECE OF BONE.

THEY CAN BE EITHER HOMOGENOUS ORHETEROGENOUS.

OSTEOMA OF EXTERNAL AUDITARY MEATUS

IN RELATION TO OTHER BONE TUMORS

SPECIFICITY THEY ARE MORE OFTEN PREVALENT IN THE PARANASAL SINUSES.

CLINICAL FEATURESPARANASAL OSTEOMAS ARE USUALLY ACCOMPANIED BY HEADACHES, FACIAL DISTORTIONS, CSF LEAKAGE.

DIAGNOSIS

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)

OSTEOMA WITH SMOOTH BOSSELATEDSURFACE.

POLYPOID CHARACTER

DENSE COMPACT BONE ON THE CUT SURFACE WITH TRABECULAE

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%)

AREAS RESEMBLING OSTEOBLASTOMA

DENSE COMPACT BONE

INVASIVE LIKE TRABECULAE

TREATMENT

THANK YOU

WITH COMPLIMENTS FROM CEYLON TEA