Reviewer: Patricia DeVilliers, D.D.S., M.S. (see Reviewers page)
Revised: 3 October 2012, last major update August 2012
Copyright: (c) 2001-2012, PathologyOutlines.com, Inc.
● Also called canker sores
● Affect 40% in US
● More common up to 20 years
● Painful, recurrent, familial
● Single or multiple, shallow, hyperemic ulcerations covered by a thin exudate with hyperemic rim
● Initially mononuclear infiltrate, then neutrophilic infiltrate from secondary bacterial infection
End of Oral cavity > Infectious > Aphthous ulcers
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