Hello dear
Warm welcome to Healthcaremagic.com
I have gone through your concern in depth .
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Redness over the mucosa indicates inflammation process of the body
pertaining to some bacterial , viral invasion or disease process .
Erythema is also part of this process , where the surface becomes
more prominent than usual surrounding area .
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Biopsy takes part of the area and doctor gets the histological
picture of the concerned area and by that you have more precise
judgment regarding your current situation .
So do not panic till the biopsy results come .
Hope this clears your query .
Welcome for any further assistance .
Regards .