A round or oval-shaped inflammatory ulceration of various etiologies appearing on mucous membrane. An aphthous ulcer in the mouth is more commonly referred to as a “canker sore” and typically last from 10 days to 14 days.
aphthous ulcer
Synonyms: canker sore, aphthosis, aphthae
Aphthous Ulcer ("canker sore")
Aphthous Ulcer ("canker sore")