anastomosis /anas·to·mo·sis/ (ah-nas″tah-mo´sis) pl. anastomo´ses [Gr.]
end-to-side anastomosis,
1. communication between vessels by collateral channels.
2. surgical, traumatic, or pathological formation of an opening between two normally distinct spaces or organs.anastomot´ic
arteriovenous anastomosis one between an artery and a vein. 
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Arteriovenous anastomosis.
crucial anastomosis an arterial anastomosis in the upper part of the thigh.
end-to-end anastomosis
1. one connecting the end of an artery and that of some other vessel.
2. anastomosis of two sections of colon, as with partial colectomy or closure of an ileostomy.
end-to-side anastomosis an anastomosis connecting the end of one vessel with the side of a larger one.
heterocladic anastomosis one between branches of different arteries.
homocladic anastomosis one between two branches of the same artery.
ileoanal pull-through anastomosis anastomosis of an ileoanal reservoir to the anal canal by means of a short conduit of ileum pulled through the rectal cuff and sutured to the anus, allowing continent elimination of feces following colectomy.
intestinal anastomosis establishment of a communication between two formerly distant portions of the intestine.
anastomosis of Riolan anastomosis of the superior and inferior mesenteric arteries.
Roux-en-Y anastomosis any Y-shaped anastomosis in which the small intestine is included. 
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Roux-en-Y anastomosis
end-to-side anastomosis,
an anastomosis connecting the end of one vessel with the side of another one.
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