| CU | cardiac unit; casein unit; cause unknown or undetermined; chymotrypsin unit; clinical unit; color un... |
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| CUS | carotid ultrasound examination; catheterized urine specimen; contact urticaria syndrome |
| EACD | eczematous allergic contact dermatitis |
| ECH | educator contact hour |
| FCH | faculty contact hour; family case home; fetal cystic hygroma |
| phagedenic ulcer | <dermatology> A rapidly spreading ulcer attended by the formation of extensive sloughing. Synonym: perambulating ulcer, sloughing ulcer, ulcus ambulans. Origin: L. Phagedaena, Gr Phago, To eat. (05 Mar 2000) |
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| chrome ulcer | An ulcer produced by exposure to chromium compounds. Synonym: tanner's ulcer. (05 Mar 2000) |
| chronic ulcer | A longstanding ulcer with fibrous scar tissue in the floor of the ulcer. (05 Mar 2000) |
| phlegmonous ulcer | A ulcer accompanied by inflammation of the neighboring tissues. (05 Mar 2000) |
| cockscomb ulcer | An ulcer that may occur in association with condylomata acuminata. (05 Mar 2000) |
| cold ulcer | A small gangrenous ulcer on the extremities; due to defective circulation. (05 Mar 2000) |
| Mooren's ulcer | Chronic inflammation of the peripheral cornea that slowly progresses centrally with corneal thinning and sometimes perforation. (05 Mar 2000) |
| constitutional ulcer | An ulcer due to systemic disease, such as tuberculosis. Synonym: symptomatic ulcer. (05 Mar 2000) |
| corneal ulcer | An infectious process of the cornea, resulting in clouding of the cornea, marked eye pain and decreased vision. See: Herpes simplex keratitis. (27 Sep 1997) |
| corrosive ulcer | <medicine> See Canker. Origin: NL, fr. Gr, lit, a feeding. See Name. Source: Websters Dictionary (01 Mar 1998) |
| creeping ulcer | An ulcer extending on one side while healing at the opposite edge, forming an undulating margin. Synonym: creeping ulcer. (05 Mar 2000) |
| Curling's ulcer | An ulcer of the duodenum in a patient with extensive superficial burns, intracranial lesions, or severe bodily injury. Synonym: stress ulcers. (05 Mar 2000) |
| hard ulcer | <dermatology> The primary skin lesion of syphilis which begins at the site of infection after an interval of 10-30 days as a papule or red ulcerated skin lesion. (27 Sep 1997) |
| healed ulcer | An ulcer covered by epithelial regeneration, beneath which there may be scarring and absence of glands or appendages. (05 Mar 2000) |
| Saemisch's ulcer | A form of serpiginous keratitis, frequently accompanied by hypopyon. (05 Mar 2000) |