What's the difference between canker and ulcer?

Canker


Definition:

  • (n.) A corroding or sloughing ulcer; esp. a spreading gangrenous ulcer or collection of ulcers in or about the mouth; -- called also water canker, canker of the mouth, and noma.
  • (n.) Anything which corrodes, corrupts, or destroy.
  • (n.) A disease incident to trees, causing the bark to rot and fall off.
  • (n.) An obstinate and often incurable disease of a horse's foot, characterized by separation of the horny portion and the development of fungoid growths; -- usually resulting from neglected thrush.
  • (n.) A kind of wild, worthless rose; the dog-rose.
  • (v. t.) To affect as a canker; to eat away; to corrode; to consume.
  • (v. t.) To infect or pollute; to corrupt.
  • (v. i.) To waste away, grow rusty, or be oxidized, as a mineral.
  • (v. i.) To be or become diseased, or as if diseased, with canker; to grow corrupt; to become venomous.

Example Sentences:

  • (1) Aphthous stomatitis (canker sores) is a common cause of recurrent mouth ulceration.
  • (2) Canker sores and cold sores are common, relatively banal diseases of the oral mucosa and lips, occurring most often in young persons.
  • (3) Isolates with identical fingerprints occurred in cankers on the same chestnut stems three times; isolates within the other three pairs were isolated from cankers more than 5 m apart.
  • (4) Romance is fine in books – although even brilliant, bold, spiky Elizabeth is right at the edge of what my cankered soul can tolerate in a love‑blind, lovestruck heroine, and don't get me started on her demented descendant Bridget Jones.
  • (5) Recurrent aphthous stomatitis (RAS) or canker sores occur in 20-60% of all persons.
  • (6) Three hundred forty five adult arctic foxes (Alopex lagopus) from all counties in Iceland were examined for excess cerumen and ear canker mites (Otodectes cynotis).
  • (7) A lot of growers have had a lot of scab and canker [due to damp weather], but as you can see we have not had a problem.” The orchards are swept out four times a year, he says, so the fungal infections can’t bloom on fallen apples and leaves and then infect the fruit.
  • (8) Seven horses with canker had radical surgical debridement and various irritant substances applied to the wounds.
  • (9) Jesse Norman, Conservative MP for Hereford and South Herefordshire South, told BBC Radio 4's World at One programme that lobbying is a "canker" in politics, and warned that undue influence was often imposed by lobbying groups.
  • (10) A small RNA species with the structural and functional properties characteristic of viroids has been isolated from three different pear sources each of which induced symptoms of the pear blister canker (PBC) disease when indexed in the pear indicator A 20.
  • (11) Canker sores, foul breath and even enuresis may occasionally be related to allergies.
  • (12) Many unusual pathologic conditions, not commonly seen in Western countries, were encountered including canker otis, tuberculous ileitis, and ascaris-induced small bowel obstruction.
  • (13) The flower of English football is being eaten by canker worms of money and avarice.
  • (14) Syringomycin, a wide-spectrum antibiotic produced by strains of Pseudomonas syringae which cause bacterial canker of peach, was able to bind to salmon sperm and calf thymus deoxyribonucleic acid but not to calf thymus histone; it also inhibited ribonucleic acid polymerase activity.
  • (15) Describing the shooting as a “cankerous sore on the soul,” Cornell Brooks, the NAACP national president, told the packed church: “We owe it to this young man to seek justice.” Brooks urged restraint from Ferguson’s young people after several stores were vandalised and looted during rioting late on Sunday.
  • (16) A stem canker disease caused by Pseudomonas syringae pv.
  • (17) The diagnosis of a case of ear canker in a dog by bacterial-colony displacement is described.
  • (18) The pathogenicity gene, pthA, of Xanthomonas citri is required to elicit symptoms of Asiatic citrus canker disease; introduction of pthA into Xanthomonas strains that are mildly pathogenic or opportunistic on citrus confers the ability to induce cankers on citrus (S. Swarup, R. De Feyter, R. H. Brlansky, and D. W. Gabriel, Phytopathology 81:802-809, 1991).
  • (19) Symptoms of the disease appeared as dry stem cankers which in advanced stages surrounded the stems.
  • (20) Carbon dioxide laser therapy was used to treat a minor form of the ulcer (canker sore); the laser therapy reduced or eliminated the pain and inflammation with normal wound healing.

Ulcer


Definition:

  • (n.) A solution of continuity in any of the soft parts of the body, discharging purulent matter, found on a surface, especially one of the natural surfaces of the body, and originating generally in a constitutional disorder; a sore discharging pus. It is distinguished from an abscess, which has its beginning, at least, in the depth of the tissues.
  • (n.) Fig.: Anything that festers and corrupts like an open sore; a vice in character.
  • (v. t.) To ulcerate.

Example Sentences:

  • (1) Calcium alginate dressings have been used in the treatment of pressure ulcers and leg ulcers.
  • (2) We evaluated the circadian pattern of gastric acidity by prolonged intraluminal pHmetry in 15 "responder" and 10 "nonresponder" duodenal ulcer patients after nocturnal administration of placebo, ranitidine, and famotidine.
  • (3) Exudative inflammatory processes predominate in the ulcer floor.
  • (4) In the past 6 years 26 patients underwent operation for recurrent duodenal ulcer after what was considered to be an "adequate" initial operation.
  • (5) Systemic corticosteroids (i.e., prednisone, prednisolone or methylprednisolone) have improved the survival rate of patients with moderate and severe ulcerative colitis.
  • (6) A leg ulcer in a 52-year-old renal transplant patient yielded foamy histiocytes containing acid-fast bacilli subsequently identified as a Runyon group III Mycobacterium.
  • (7) The authors conclude that H. pylori alone causes little or no effect on an intact gastric mucosa in the rat, that either intact organisms or bacteria-free filtrates cause similar prolongation and delayed healing of pre-existing ulcers with active chronic inflammation, and that the presence of predisposing factors leading to disruption of gastric mucosal integrity may be required for the H. pylori enhancement of inflammation and tissue damage in the stomach.
  • (8) Serum pepsinogen 1, serum gastrin, ABO blood groups, secretor status of ABH blood group substances and behavioral factors were studied in 15 patients with duodenal ulcer and 61 their relatives affected and unaffected to duodenal ulcer.
  • (9) Local injections of contrykal into the ulcer had inhibited proteinase activity and had a positive therapeutic effect.
  • (10) For that reason we determine basal serum pepsinogen I (PG I) levels in 25 ulcerous patients and 75% of their offspring and to a control group matched by age and sex.
  • (11) Useful studies on the relationship between these acute lesions and peptic ulceration are rare.
  • (12) A neodymium YAG (Nd:YAG) laser was evaluated in a dog ulcer model used in the same manner as is recommended for bleeding patients (power 55 W, divergence angle 4 degrees, with CO2 gas-jet assistance).
  • (13) The ulcers on seven of ten legs (70%) treated with Unna's boots and on 10 of 14 legs (71%) treated with elastic support stocking healed.
  • (14) In the controlled wound care group, only three ulcers in three patients achieved complete healing; the remaining 24 ulcers in 20 patients failed to achieve even 50% healing in the stipulated 3-month period.
  • (15) To investigate the possibility that an abnormality of gastric emptying exists in duodenal ulcer and to determine if such an abnormality persists after ulcer healing, scintigraphic gastric emptying measurements were undertaken in 16 duodenal ulcer patients before, during, and after therapy with cimetidine; in 12 patients with pernicious anemia, and in 12 control subjects.
  • (16) The pathomechanism, how C. pylori facilitates the development of peptic ulcer is since hypothetical.
  • (17) Three types of responses were observed: group A, no inhibition of gastric acid secretion occurred in 17 (40%) ulcer patients and in three (18%) controls (p less than 0.05); group B, inhibition of gastric acidity occurred in seven (16%) ulcer patients and in 12 (71%) controls (p less than 0.05), and group C, retarded gastric acid inhibition occurred in 19 (44%) duodenal ulcer patients and in 2 (12%) controls (p less than 0.05).
  • (18) Nine patients with duodenal ulcer were studied before and 2--3 months after proximal gastric vagotomy (PGV).
  • (19) In group III, multiple confluent ulcers were produced in the cheek pouch on one side, with a single ulcer in the contralateral cheek pouch; no drug was applied, and the tissues were prepared for histology.
  • (20) Gastric metaplasia was present in only 8% of 48 bulbar ulcer cases.