| aphthous ulcer | <gastroenterology> A type of benign mouth ulcer often caused by injury to the mucosal lining of the oral cavity, viral infection or vitamin deficiency. (27 Sep 1997) |
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| atonic ulcer | An ulcer that shows little or no tendency to heal. (05 Mar 2000) |
| Buruli ulcer | An ulcer of the skin, with widespread necrosis of subcutaneous fat, due to infection with Mycobacterium ulcerans; occurs in Uganda in persons living on the Nile river banks. Origin: Buruli, district in Uganda (05 Mar 2000) |
| Gaboon ulcer | A form of tropical ulcer affecting the residents of this region; it resembles a syphilitic ulcer, especially in the appearance of its scar. Origin: Gaboon, a region in Africa (05 Mar 2000) |
| Palmer acid test for peptic ulcer | In duodenal ulcer, the administration of acid by duodenal tube causes severe pain. (05 Mar 2000) |
| varicose ulcer | Ulcer due to varicose veins. Chronic venous insufficiency in the deep veins of the legs leads to shunting the venous return into the superficial veins, in which pressure and flow rate, as well as oxygen content, are increased. (12 Dec 1998) |
| gastric ulcer | <gastroenterology> An ulcer in the mucosal lining of the stomach. Ulcer formation results from gastric inflammation that may be triggered by the use of alcohol, aspirin or non-steroidal anti-inflammatories agents. Symptoms include recurrent abdominal pains (may be relieved by antacids), nausea, vomiting, weight loss and fatigue. Complications include GI bleeding, obstruction, perforation and ulcer penetration into surrounding tissues. Treatment includes the avoidance of alcohol, smoking, aspirin, anti-inflammatories and caffeine. Medications such as antacids or H2 antagonists (for example cimetidine, ranitidine) or proton pump inhibitors (omeprazole) have been shown to be effective treatment. (27 Sep 1997) |
| Mann-Williamson ulcer | <surgery> An operation performed on experimental animals (dogs) in research on peptic ulcer, the duodenum with its alkaline secretions being transplanted into the ileum and the cut end of the jejunum anastomosed to the pylorus. The animals develop ulcers in the jejunum which directly receives the gastric juice. (05 Mar 2000) |
| venereal ulcer | A sexually transmitted disease caused by the bacteria haemophilus ducreyi. Causes multiple painful ulcers on the penis and the vulva often associated with tender and enlarged inguinal lymph nodes. (27 Sep 1997) |
| marginal ring ulcer of cornea | A slowly advancing intermittent ulcer involving the circumference of the corneal margin. (05 Mar 2000) |
| genital ulcer disease | Ulcerative lesions on the genitals, usually caused by a sexually transmitted condition such as herpes, syphilis or chancroid. The presence of genital ulcers may increase the risk of transmitting HIV. (09 Oct 1997) |
| Marjolin's ulcer | Well-differentiated but aggressive squamous cell carcinoma occurring in cicatricial tissue at the epidermal edge of a sinus draining underlying osteomyelitis. (05 Mar 2000) |
| penetrating ulcer | An ulcer extending into deeper tissues of an organ. (05 Mar 2000) |
| Meleney's ulcer | Undermining ulcer of the skin and subcutaneous tissues, usually following an operation, caused by a synergistic interaction between microaerophilic nonhemolytic streptococci and aerobic haemolytic staphylococci. Synonym: Meleney's gangrene, progressive bacterial synergistic gangrene. (05 Mar 2000) |
| peptic ulcer | <gastroenterology> An ulcer in the wall of the stomach or duodenum resulting from the digestive action of the gastric juice on the mucous membrane when the latter is rendered susceptible to its action. (13 Nov 1997) |