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A lesion on the surface of the skin or on a mucous surface, caused by superficial loss of tissue, usually with inflammation. A wound with superficial loss of tissue from trauma is not primarily an u., but may become ulcerated if infection occurs.ulcus; [L. ulcus (ulcer-), a sore, ulcer]
acute decubitus u. a severe form of bedsore, of neutrophic origin, occurring in hemiplegia or paraplegia.
Aden u. the lesion occurring in cutaneous leishmaniasis.
amputating u. an u. encircling a limb.
anastomotic u. an u. of jejunum, after gastroenterostomy.
atonic u. an u. that shows little or no tendency to heal.
Buruli u. an u. 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. [Buruli, district in Uganda]
chiclero u. lesion of the pinna of the ear due to cutaneous leishmaniasis, usually Leishmania mexicana; seen in workers harvesting chicle plants in Central America.bay sore; [Sp. chicle farmer, fr. chicle, fr. Nahuatl chictli]
chrome u. an u. produced by exposure to chromium compounds.tanner's u;
chronic u. a longstanding u. with fibrous scar tissue in the floor of the u.
cockscomb u. an u. that may occur in association with condylomata acuminata.
cold u. a small gangrenous u. on the extremities; due to defective circulation.
constitutional u. an u. due to systemic disease, such as tuberculosis.symptomatic u;
corrosive u. noma
creeping u. serpiginous u
Curling's u. an u. of the duodenum in a patient with extensive superficial burns, intracranial lesions, or severe bodily injury.stress u.'s;
decubitus u. a chronic u. that appears in pressure areas of skin overlying a bony prominence in debilitated patients confined to bed or otherwise immobilized, due to a circulatory defect.bedsore, decubital gangrene, hospital gangrene, nosocomial gangrene, pressure gangrene, pressure sore, sloughing phagedena, ulcus hypostaticum;
dendritic corneal u. keratitis caused by herpes simplex virus.
dental u. an u. on the oral mucuous membrane caused by biting or by rubbing against the edge of a broken tooth.
diphtheritic u. an u. covered with a gray adherent membrane, caused by Corynebacterium diphtheriae.
distention u. an u. of the intestine in the dilated part above a stricture.
elusive u. Hunner's u
fascicular u. a localized vascularization of the cornea to the site of a corneal u.
Fenwick-Hunner u. Hunner's u
Gaboon u. a form of tropical u. affecting the residents of this region; it resembles a syphilitic u., especially in the appearance of its scar. [Gaboon, a region in Africa]
gastric u. an u. of the stomach.
gravitational u. a chronic u. of the leg with impaired healing because of the dependent position of the extremity and the incompetence of the valves of the varicosed veins; the venous return stagnates and creates hypoxemia. See also varicose u.
groin u. granuloma inguinale tropicum
gummatous u. lesion of the skin occurring in late syphilis.
hard u. chancre
healed u. an u. covered by epithelial regeneration, beneath which there may be scarring and absence of glands or appendages.
herpetic u. u. caused by herpes simplex virus.
Hunner's u. a focal and often multiple lesion involving all layers of the bladder wall in chronic interstitial cystitis; the surface epithelium is destroyed by inflammation and the initially pale lesion cracks and bleeds with distention of the bladder.elusive u., Fenwick-Hunner u;
hypopyon u. 1. an advancing central suppurative u. of the cornea; See also hypopyon. 2. a corneal u. with pus in the anterior chamber;
indolent u. a chronic u., with hard elevated edges and few or no granulations, and showing no tendency to heal.
inflamed u. an u. with a purulent discharge and inflamed borders.
Kurunegala u.'s pyosis tropica [Kurunegala, a district in Sri Lanka]
Lipschütz' u. a simple acute ulceration of the vulva or lower vagina of nonvenereal origin.ulcus vulvae acutum;
lupoid u. an u. resembling that of cutaneous tuberculosis.
Mann-Williamson u. See Mann-Williamson operation.
marginal ring u. of cornea a slowly advancing intermittent u. involving the circumference of the corneal margin.
Marjolin's u. well-differentiated but aggressive squamous cell carcinoma occurring in cicatricial tissue at the epidermal edge of a sinus draining underlying osteomyelitis.
Meleney's u. undermining u. of the skin and subcutaneous tissues, usually following an operation, caused by a synergistic interaction between microaerophilic nonhemolytic streptococci and aerobic hemolytic staphylococci.Meleney's gangrene, progressive bacterial synergistic gangrene;
Mooren's u. chronic inflammation of the peripheral cornea that slowly progresses centrally with corneal thinning and sometimes perforation.
Oriental u. the lesion occurring in cutaneous leishmaniasis.Oriental sore;
penetrating u. an u. extending into deeper tissues of an organ.
peptic u. an u. of the alimentary mucosa, usually in the stomach or duodenum, exposed to acid gastric secretion.
perambulating u. phagedenic u
perforated u. an u. extending through the wall of an organ.
perforating u. of foot a round, deep, trophic u. of the sole of the foot, following disease or injury, in any part of its course from the center to the periphery of the nerve supplying the part.mal perforant;
phagedenic u. a rapidly spreading u. attended by the formation of extensive sloughing.perambulating u., sloughing u., ulcus ambulans;
phlegmonous u. a u. accompanied by inflammation of the neighboring tissues.
pudendal u. granuloma inguinale
recurrent aphthous u.'s aphtha (2)
ring u. of cornea inflammation of the greater part or the whole of the corneal periphery.
rodent u. obsolete term for a slowly enlarging ulcerated basal cell carcinoma, usually on the face.
Saemisch's u. a form of serpiginous keratitis, frequently accompanied by hypopyon.
serpent u. of cornea serpiginous keratitis
serpiginous u. an u. extending on one side while healing at the opposite edge, forming an undulating margin.creeping u;
serpiginous corneal u. serpentine ulceration of the cornea, due to infection, most often with Streptococcus pneumoniae.
simple u. a local, not constitutional, u. not accompanied by marked pain or inflammation.
sloughing u. phagedenic u
soft u. chancroid
stasis u. varicose u
stercoral u. an u. of the colon due to pressure and irritation of retained fecal masses.
steroid u. an u., usually on the leg or foot, developing from a wound in patients undergoing long-term steroid therapy; results from the wound-healing inhibitory effects characteristic of steroids.
stomal u. an intestinal u. occurring after gastrojejunostomy in the jejunal mucosa near the opening (stoma) between the stomach and the jejunum.
stress u.'s Curling's u
Sutton's u. a solitary, deep, painful u. of the buccal or genital mucous membrane.
symptomatic u. constitutional u
syphilitic u. 1. chancre 2. any ulceration caused by a syphilitic infection.
Syriac u. , Syrian u. old names for diphtheria.
tanner's u. chrome u
transparent u. of the cornea obsolete term for an u. of the cornea, occurring usually in children, that heals without opacity.
trophic u. u. resulting from cutaneous sensory denervation. See also perforating u. of foot.trophic gangrene;
tropical u. 1. the lesion occurring in cutaneous leishmaniasis; 2. tropical phagedenic ulceration caused by a variety of microorganisms, including mycobacteria; common in northern Nigeria.tropical sore;
undermining u. a chronic cutaneous u. with overhanging margins; due to hemolytic streptococci or other bacteria.
varicose u. the loss of skin surface in the drainage area of a varicose vein, usually in the leg, resulting from stasis and infection.stasis u;
venereal u. chancroid
Zambesi u. an u., usually single, about 3 cm in diameter, on the foot or leg, occurring in laborers in the Zambesi Delta; it has a sloughing surface, but does not spread and produces no constitutional symptoms or glandular enlargement; it is associated with the presence of a spirillum and a large fusiform bacillus; one attack seems to confer a partial immunity.
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