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7. Extradural abscess is common with frontal sinusitis. |
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8. Orbital lesions are common with Ethmoiditis |
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9. Chronic sinusitis – septum and turbinates are involved |
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10. Osteomyelitis in children is by spread from Maxillary sinusitis |
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11.Osteomyelits in adults is by spread from frontal sinusitis |
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12. The Rudimentary sinus at birth is frontal |
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13. Adenocarcinoma is common in – Ethmoidal Sinus |
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14. Osteoma is common in frontal sinus. |
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15. Ossifying fibromas are common in Maxillary and Ethmoidal sinuses |