string sign

string sign,

a narrow pyloric canal with congenital pyloric stenosis or a narrowed bowel segment with regional ileitis. Use of a radiopaque contrast medium causes the narrowed lumen to appear as a thin string on radiographs.

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string

1. twine, very thin rope.

2. a term used to denote a group of dairy cattle housed together in a free stall system based on stage of lactation and production with string 1 being the most recently calved and the highest producing cows, usually containing cows to the time of peak lactation after which they would move to string 2 and subsequently later strings. This allows groups of cattle to be fed separately on the basis of production.

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string foreign body

see linear foreign body.

string sign

seen in radiographs of the stenosed gastric pylorus as contrast medium is forced into the limited canal.

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string sign

GI imaging–colon A linear fraying of the column of a barium study of the lower GI tract with luminal stenosis, spasm, ulceration and scarring, seen in the terminal ileum in Crohn's disease; grossly, affected intestine is thickened, rigid and likened to a garden hose Stomach An elongated, narrowed and straight single, occasionally dual channel of contrast as seen in well-developed hypertrophic pyloric stenosis