* * *
1. The taking up or receiving of one part within another, especially the enfolding of one segment of the intestine within another. SEE ALSO: introversion, invagination. 2. Often, specifically, the process of incorporation of new material in the growth of the cell wall. SYN: introsusception. [L. intus, within, + sus-cipio, to take up, fr. sub + capio, to take]
- double i. a second i. that involves the bowel above the first; the first i. is followed by contraction of the bowel wall around it, and the solid mass so formed is enveloped by the proximal portion of the bowel and is thus the cause of the second i..
- ileal i. i. in which one portion of the ileum is ensheathed in another portion of the same division of the bowel.
- ileocecal i. i. in which the lower segment of the ileum passes through the valve of the colon into the cecum.
- ileocolic i. i. in which the lower portion of the ileum with the valve of the cecum passes into the ascending colon.
- jejunogastric i. a rare complication following gastrojejunostomy in which the afferent or the efferent loop of bowel invaginates into the stomach.
* * *
in·tus·sus·cep·tion -'sep-shən n
1) INVAGINATION esp the slipping of a length of intestine into an adjacent portion usu. producing obstruction
2) the deposition of new particles of formative material among those already embodied in a tissue or structure (as in the growth of living organisms) compare ACCRETION, APPOSITION (1)
in·tus·sus·cep·tive -'sep-tiv adj
* * *
n.
the telescoping (invagination) of one part of the bowel into another: most common in young children under the age of four. As the contents of the intestine are pushed onwards by muscular contraction more and more intestine is dragged into the invaginating portion, resulting in obstruction. Symptoms include intermittent screaming and pallor, vomiting, and the passing of red jelly with the stools; if the condition does not receive prompt surgical treatment, shock from gangrene of the bowel may result. A barium or Gastrografin enema may confirm the diagnosis and in many cases may relieve the intussusception.
* * *
in·tus·sus·cep·tion (in″tə-sə-sepґshən) [L. intus within + suscipere to receive] 1. a receiving within. 2. prolapse of one part of the intestine into the lumen of an immediately adjoining part. It is most common in infants, and in adults it is often associated with a neoplasm. Symptoms include partial obstruction, a palpable abdominal mass, and abdominal pain with cramping.Medical dictionary. 2011.