“A mouth ulcer is a painful sore in the mouth on either the cheeks or gums.”

“A 53 year old man presented with an ulcer on the sole of his left foot, attributed to a possible penetrating injury three months previously.”

“Duodenal ulcer is twice as common in those who are blood group O non-secretors.”

“More severe inflammation of the mucosa is readily evident as erythema, intramucosal hemorrhage, exudate, or ulceration.”

“Examination of the gastrectomy specimen revealed an indurated tumor with central ulceration located in the fundus.”

“Recent work by Nicol et al, 2001 has shown that crib-biting in foals is associated with gastric inflammation and ulceration.”

“It is useful for boils and skin ulcerations, like bedsores and canker sores.”

“A 40-year-old man presented with erythematous and lavender nodules, as well as ulcerations on the nasal and malar areas of his face.”

“Carotid artery stenosis is characterized by atherosclerotic changes, plaquing, ulcerations, and a progressive narrowing of the carotid vessels.”

“There is preliminary evidence that quassia may be useful in the treatment of leukemia or gastric ulcers.”

“Other infections are associated with normal or elevated gastric acidity, and may lead to duodenal ulcers.”

“Aspirin and drugs like ibuprofen and naproxen can cause life-threatening ulcers.”