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ulcer |
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ulcer /ul·cer/ (ul´ser) a local defect, or excavation of the surface, of an organ or tissue, produced by sloughing of necrotic inflammatory tissue.
corneal ulcer ulcerative keratitis. decubital ulcer , decubitus ulcer bedsore; an ulceration due to an arterial occlusion or prolonged pressure, as when a patient is confined to a bed or a wheelchair. duodenal ulcer a peptic ulcer situated in the duodenum. gastric ulcer an ulcer of the gastric mucosa. Hunner's ulcer one involving all layers of the bladder wall, occurring in chronic interstitial cystitis. jejunal ulcer an ulcer of the jejunum; such an ulcer following surgery is called a secondary jejunal u. marginal ulcer a gastric ulcer in the jejunal mucosa near the site of a gastrojejunostomy. peptic ulcer an ulceration of the mucous membrane of the esophagus, stomach, or duodenum, due to action of the acid gastric juice. perforating ulcer one involving the entire thickness of an organ or of the wall of an organ creating an opening on both surfaces. phagedenic ulcer 1. a necrotic lesion associated with prominent tissue destruction, due to secondary bacterial invasion of an existing cutaneous lesion or of intact skin in a person with impaired resistance as the result of systemic disease. plantar ulcer a deep neurotrophic ulcer of the sole of the foot, resulting from repeated injury because of lack of sensation in the part; seen with diseases such as diabetes mellitus and leprosy. rodent ulcer ulcerating basal cell carcinoma of the skin. stercoraceous ulcer , stercoral ulcer one caused by pressure of impacted feces; also, a fistulous ulcer through which fecal matter escapes. stress ulcer peptic ulcer, usually gastric, resulting from stress. trophic ulcer one due to imperfect nutrition of the part. tropical ulcer 1. a lesion of cutaneous leishmaniasis. tropical phagedenic ulcer a chronic, painful, phagedenic ulcer of unknown cause, usually on the lower limbs of malnourished children in the tropics. varicose ulcer an ulcer due to varicose veins. venereal ulcer a nonspecific term referring to the formation of ulcers resembling chancre or chancroid about the external genitalia.
Ulcer A site of damage to the skin or mucous membrane that is characterized by the formation of pus, death of tissue, and is frequently accompanied by an inflammatory reaction. Mentioned in: Birthmarks, Canker Sores, Dermatitis, Diabetic Foot Infections, Gastritis, Genital Herpes, H-2 Blockers, Impetigo, Nasal Packing, Yaws
ulcer [ul′sər] Etymology: L, ulcus, a sore a circumscribed, craterlike lesion of the skin or mucous membrane resulting from necrosis that accompanies some inflammatory, infectious, or malignant processes. An ulcer may be shallow, involving only the epidermis, as in pemphigus, or deep, as in a rodent ulcer. Some kinds of ulcer are peptic ulcer, pressure ulcer, and serpent ulcer. ulcerate, v., ulcerative, adj. ulcer [ul´ser] a local defect, or excavation of the surface of an organ or tissue, produced by sloughing of necrotic inflammatory tissue. aphthous ulcer a small painful ulcer in the mouth, approximately 2 to 5 mm in diameter. It usually remains for five to seven days and heals within two weeks with no scarring. chronic leg ulcer ulceration of the lower leg caused by peripheral vascular disease involving either arteries and arterioles or veins and venules of the affected limb. Arterial and venous ulcers are quite different and require different modes of treatment. Venous stasis ulcers occur as a result of venous insufficiency in the lower limb. The insufficiency is due to deep vein thrombosis and failure of the one-way valves that act during muscle contraction to prevent the backflow of blood. Chronic varicosities of the veins can also cause venous stasis. Patient Care. Stasis ulcers are difficult to treat because impaired blood flow interferes with the normal healing process and prolongs repair. Patient care is concerned with preventing a superimposed infection in the ulcer, increasing blood flow in the deeper veins, and decreasing pressure within the superficial veins. decubitus ulcer pressure ulcer. duodenal ulcer an ulcer of the duodenum, one of the two most common types of peptic ulcer. gastric ulcer an ulcer of the inner wall of the stomach, one of the two most common kinds of peptic ulcer. Hunner's ulcer one involving all layers of the bladder wall, seen in interstitial cystitis. hypertensive ischemic ulcer a manifestation of infarction of the skin due to arteriolar occlusion as part of a longstanding vascular disease, seen especially in women in late middle age, and presenting as a red painful plaque on the lower limb or ankle that later breaks down into a superficial ulcer surrounded by a zone of purpuric erythema. marginal ulcer a peptic ulcer occurring at the margin of a surgical anastomosis of the stomach and small intestine or duodenum. Marginal ulcers are a frequent complication of surgical treatment for peptic ulcer; they are difficult to control medically and often require further surgery. peptic ulcer see peptic ulcer. perforating ulcer one that involves the entire thickness of an organ, creating an opening on both surfaces. phagedenic ulcer 1. any of a group of conditions due to secondary bacterial invasion of a preexisting cutaneous lesion or the intact skin of an individual with impaired resistance as a result of a systemic disease, which is characterized by necrotic ulceration associated with prominent tissue destruction. pressure ulcer see pressure ulcer. rodent ulcer ulcerating basal cell carcinoma of the skin. stasis ulcer ulceration on the ankle due to venous insufficiency and venous stasis. stress ulcer a type of peptic ulcer, usually gastric, resulting from stress; possible predisposing factors include changes in the microcirculation of the gastric mucosa, increased permeability of the gastric mucosa barrier to H+, and impaired cell proliferation. trophic ulcer one due to imperfect nutrition of the part. tropical ulcer 1. a lesion of cutaneous leishmaniasis. tropical phagedenic ulcer a chronic, painful phagedenic ulcer usually seen on the lower limbs of malnourished children in the tropics; the etiology is unknown, but spirochetes, fusiform bacilli, and other bacteria are often present in the developing lesion, and protein and vitamin deficiency with lowered resistance to infection may play a role in the etiology. varicose ulcer an ulcer due to varicose veins. venereal ulcer a nonspecific term referring to the formation of ulcers resembling chancre or chancroid about the external genitalia; there are both sexually transmitted and other types.
ulcer (ul´sur), n a loss of covering epithelium from the skin or mucous membranes, causing gradual disintegration and necrosis of the tissues. ulcer, aphthous n an open, shallow lesion in the oral cavity that causes pain; commonly known as a canker sore. The cause is unknown, and treatment is limited to alleviating the symptoms. ulcer, aphthous, recurrent (RAU) n periodic episodes of aphthous lesions on nonkeratinized oral tissues lasting from 1 week to several months. Trauma and immunologic factors are involved in the etiology. The single or multiple discrete or confluent ulcers have a well-defined marginal erythema and a central area of necrosis with sloughing. Also called canker sore and recurrent aphthae. ulcer, autochthonous n See chancre. ulcer, decubitus ulcer, diabetic n an ulcer, usually of the lower extremities, associated with diabetes mellitus. ulcer, herpetic n an ulcer on keratinized orofacial tissues that is secondary to the vesicle of herpes simplex after the intact surface is broken by trauma to the lesion; a shallow ulcer with an irregular, erythematous border and a yellow-gray base. Contagious through all stages of lesion. Can be treated by topical acyclovir. Also called a cold sore. ulcer, Mikulicz's n.pr See periadenitis mucosa necrotica recurrens. ulcer, pemphigoid aphthous, n a lesion located on the gingiva or mucous membranes due to a chronic disease of the autoimmune system. It is indicated by a wound with a thick wall that ruptures within 24 to 48 hours and leaves an eroded and painful surface area. It heals through the formation of a scar. ulcer, peptic n an ulcer of the stomach or duodenum. Most ulcers are associated with H. pylori, a spiral-shaped bacterium that lives in the acidic environment of the stomach. They can also be caused or worsened by drugs such as aspirin and other NSAIDs. ulcer, pterygoid n See aphtha, Bednar's. ulcer, rodent, n See carcinoma, basal cell. ulcer, traumatic,
n an ulcer that is caused by trauma. It can be due to faulty oral hygiene, rough foods, oral habits, poor-fitting dentures, or inadvertent mastication or biting of oral tissues. The offending cause may need to be removed by the patient or clinician. After this treatment, it must heal within a 2-week period to rule out any oral cancer concerns. The older term in dentistry is decubitus ulcer. ulcer a local defect, or excavation of the surface of an organ or tissue, produced by sloughing of necrotic inflammatory tissue. They occur in all organs and tissues and are to be found under those headings, e.g. abomasal, corneal, gastric. button ulcer see button ulcer. callous ulcer see set-fast (2). collagenase ulcer a rapidly expanding, erosive ('melting') corneal ulcer, seen particularly in brachycephalic breeds of dogs. Curling's ulcer acute ulceration of the stomach or duodenum seen after severe burns of the body in humans. decubitus ulcer see decubitus ulcer. dendritic ulcer linear, branching pattern of ulceration on the cornea; characteristic of herpesvirus infections. See also herpetic keratitis. eosinophilic ulcer see eosinophilic ulcer. gastroduodenal ulcer geographic ulcer a large, superficial, irregularly shaped corneal ulcer, typically formed by the coalescence of several dendritic ulcers. indolent ulcer see eosinophilic ulcer, refractory ulcer (below). infectious dermal ulcer a systemic, fatal bacteremia of snakes manifested by multiple, small cutaneous ulcers. Called also scale rot. intestinal ulcer is rare in all species. When they do occur, intestinal ulcers usually cause signs of chronic enteritis. It is a common lesion in adenocarcinoma of the intestine. See also peptic ulcer. lip ulcer see eosinophilic ulcer. lip and leg ulcer see ulcerative dermatosis. melting ulcer see collagenase ulcer (above). ulcer mound a gastric ulcer viewed tangentially radiographically creates a mound in the otherwise smooth outline of radiopaque material in the stomach. necrotic ulcer of swine see ulcerative granuloma of swine. perforating ulcer one that involves the entire thickness of an organ, creating an opening on both surfaces. See also ulcer perforation. phagedenic ulcer a necrotizing lesion in which tissue destruction is prominent. refractory ulcer a chronic, superficial corneal ulceration in dogs, particularly common in Boxers, that extends into the superficial stroma, often undermining epithelium at the edges. The cause is unknown but abnormalities of the basal epithelial cells and anterior stroma have been noted. Response to the usual methods of treatment for corneal ulceration is characteristically very slow; superficial keratectomy is the treatment of choice. Called also superficial corneal erosion syndrome, Boxer ulcer. rodent ulcer see eosinophilic ulcer. stress ulcer superficial ulcerations or erosions of mucosa in the stomach, duodenum or colon. The possible predisposing factors include changes in the microcirculation of the gastric mucosa, increased permeability of the gastric mucosa barrier to H+, and impaired cell proliferation. stromal ulcer a corneal ulcer involving the stroma. trophic ulcer
one due to imperfect nutrition of the part. In dogs, may develop in digital and metatarsal pads in association with tibial nerve injury. ulcer A localized lesion of the skin or of a mucous layer in which the superficial epithelium is destroyed and deeper tissues are exposed. See abscess.
corneal ulcer A superficial loss of corneal tissue as a result of infection that has led to necrosis. It may be caused by a bacterium (e.g. Pseudomonas aeruginosa, Streptococcus pneumoniae), by a virus (e.g. herpesvirus), or by a fungus (e.g. Candida, Aspergillus, Penicillium). It causes pain and usually reduced visual acuity, especially if the ulcer occurs in the centre of the cornea. Corneal ulcers usually look dirty grey or white and are opaque areas of various sizes and a mucopurulent discharge may be present. If induced by contact lenses, especially extended wear lenses, patients must cease wearing their lenses immediately, and the appropriate therapy instituted: antibacterial, antifungal or antiviral agent. See corneal facet; herpes simplex keratitis; hypopyon keratitis; rosacea keratitis; ulcerative keratitis; keratocele; keratomycosis; leukoma. dendritic ulcer See herpes simplex keratitis. von Hippel's internal ulcer A depression noted in the posterior surface of the cornea. This lesion resembles posterior lenticonus, except that it is thought to be due to an infection or inflammation. The lesion can be differentiated from Peter's anomaly by the presence of endothelium and Descemet's membrane in the former. Due to its posterior location, the lesion does not usually disturb visual function. See Peter's anomaly. marginal corneal ulcer Benign condition due to a hypersensitivity reaction to bacterial conjunctivitis, particularly staphylococcal blepharoconjunctivitis. It is characterized by infiltration of the peripheral cornea by white cells and by ocular irritation. The condition is usually self-limiting but painful. Treatment includes frequent cleaning of the eyelid margin with a cotton-tipped applicator or face cloth or cotton ball with baby shampoo, warm compresses, antibiotic ointment and occasionally topical corticosteroids. Mooren's ulcer A rare, superficial ulcer of the cornea of unknown origin. It starts near the limbus as an overhanging advancing edge that in severe cases spreads over the entire cornea and may even invade the sclera. The patient complains of pain and blurred vision. There are two types: a self-limiting form, usually unilateral, affecting old people, and a progressive form, bilateral, affecting young people. The condition is difficult to treat and this may include topical and systemic steroids, immunosuppressants, or conjunctival excision. See peripheral ulcerative keratitis. serpiginous ulcer See hypopyon keratitis. shield ulcer A localized corneal ulcer noted in severe cases of vernal conjunctivitis. The lesion is usually oval or pentagonal resembling a warrior's shield. It is located in the upper portion of the cornea as a result of irritation from the large papillae on the palpebral surface of the overlying eyelid. ulcer Dermatology A defect in a mucocutaneous surface See Bairnesdale ulcer, Buruli ulcer, Esophageal ulcer, Kissing ulcer, Pressure ulcer, Rodent ulcer ENT Mouth ulcer, see there See Aphthous ulcer GI disease Duodenal ulcer, see there. Cf
Cushing's ulcer, Dieulafoy ulcer, Peptic ulcer, Stercoral ulcer, Stress ulcer Ophthalmology A defect on the epithelium of the eye. See Corneal ulcer, Corneal neurotrophic ulcer, Geographic ulcer, Peptic ulcer, Serpiginous ulcer. Patient discussion about ulcer. Q. What are the symptoms of Ulcerative Colitis? I am 40 years old and suffer from a lot of stomach aches and diarrhea. Do I have Ulcerative Colitis? What are its symptoms? A. I found a movie which explains about Ulcerative Colitis, which might interest you: http://www.5min.com/Video/What-are-Colitis-Crohns-Disease-and-Ulcerative-Co-7082 Q. Stomach ulcer or bad heartburn? hi. i am not sure if this is just heartburn or maybe i have an ulcer. for the last 7 months i have been getting really severe pains in my stomach (between my chest and my belly button). my upper back gets sharp pains and my stomach bloats out like I’m 8 months pregnant!!!. i have tried to take antacids for this but nothing works. i don’t know what else to do. it scares me sometimes because i have no idea what it is. My mom thinks it could be an ulcer. the pain lasts for a good 4 to 5 hours and i cant even sit down because the pain hurts so bad. can anyone tell me what this might be????? A. After 7 months with an ulcer you’d be vomiting blood and may have blood in your feces. Anti acid would have helped. So what you say doesn’t sound anything like it. I think a good idea will be going the next morning to see a Dr. – looking for a diagnosis on the web is not a very good idea. And even if you know for certain that you have an ulcer- it is curable. Why wait 7 months? Q. What is the difference between duodenal ulcer and stomach ulcer? I was diagnosed recently with duodenal ulcer. I heard the term stomach ulcer but not duodenal. What causes duodenal and what cause stomach ulcer? And how do they treat duodenal ulcer? A. The location. Stomach ulcers are located in the stomach. Duodenal ulcers are located in the duodenum, which is the first part of the intestine (that have 3 parts) right after the stomach. The cause is ususal the same and so is the treatment- antibiotics. I got both. First time it was stomach ulcer and then duodenal. So I can tell you they are both very painful …:) Read more or ask a question about ulcerWant to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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