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[passionate786]

why frontal sinusitis is uncommon during first decade of life?????

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[Ragnarok]

Only the maxillary and ethmoid sinuses are present at birth and they enlarge during the first decade of life.

The frontal and sphenoid sinuses only begin to appear at 5-6 years of age, and they do not become fully developed until adolescence.

That's why frontal sinusitis is uncommon during the first decade of life.

GL