pyloric

(redirected from antral pyloric hypertrophy syndrome)
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pyloric

 [pi-lor´ik]
pertaining to the pylorus or to the pyloric part of the stomach.
pyloric stenosis obstruction of the pyloric orifice of the stomach; it may be congenital, as in hypertrophic pyloric stenosis, or acquired, due to peptic ulceration or prepyloric carcinoma.

The initial symptom is vomiting, mild at first but becoming increasingly more forceful. It can occur both during and after feedings. Diagnosis may be confirmed by x-ray examination using a barium meal.

Treatment is usually surgical, involving longitudinal splitting of the muscle (pyloromyotomy).
Congenital pyloric stenosis. The abnormal narrowing of the opening of the pylorus causes episodes of projectile vomiting. From Frazier et al., 2000.

py·lor·ic

(pī-lōr'ik),
Relating to the pylorus.

pyloric

/py·lo·ric/ (pi-lor´ik) pertaining to the pylorus or to the pyloric part of the stomach.

pyloric

(pī-lôr′ĭk, pĭ-)
adj.
Of or relating to the pylorus.

pyloric

[pīlôr′ik]
Etymology: Gk, pyle, gate, ouros, guard
pertaining to the pylorus, the opening between the stomach and duodenum.

py·lor·ic

(pī-lōr'ik)
Relating to the pylorus.

pyloric

of or relating to that end of the vertebrate stomach which opens into the intestine. The other end is called the cardiac area of the stomach.

pyloric

pertaining to the pylorus or to the pyloric part of the stomach.

antral pyloric hypertrophy syndrome
a narrowing of the pyloric antrum caused by hypertrophy of the circular smooth muscle and mucosa; occurs most commonly in dogs of small breeds. Obstruction to gastric emptying causes chronic vomiting.
pyloric antrum
the part of the stomach cavity just cranial to the pylorus.
pyloric dysfunction
the usual effect is to delay gastric emptying. See pyloric achalasia, pyloric obstruction (below).
pyloric gastropathy
chronic hypertrophic pyloric gastropathy.
pyloric gland
situated in the pyloric region of the stomach and secreting gastrin and mucus. The secretion is slightly alkaline.
pyloric obstruction
may be functional due to spasm or achalasia, or physical due to foreign body, e.g. phytobezoar, or external compression by, e.g. lipoma or fat necrosis or tumor or cicatrical contraction. Clinical signs are vomiting, distress due to gastric dilatation, possibly visible abdominal enlargement. In ruminants gross distention of abdomen, rumen contents running from nose, scant feces. In dogs and cats delayed gastric emptying usually causes vomiting, sometimes characteristically projectile, of undigested food.
pyloric outflow failure
achalasia of the pylorus with obstruction to the flow of ingesta into the intestine; impaction of material in the abomasum follows; pyloric ulcer a common sequel.
pyloric spasm
see pyloric achalasia (above).
pyloric stenosis, congenital pyloric hypertrophy
usually a congenital lesion in dogs, particularly the brachycephalic breeds, that causes vomiting and poor growth from weaning age. Occasionally hypertrophy of the pyloric sphincter may be acquired.