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Ileo-colon-rectoplasty. An experimental morpho-functional study on the pig
M Garavoglia1, F Borghi, S Bianco
1Department of Surgery, University of Torinò, Turin, Italy.
Panminerva Medica
|March 1, 1993
Summary
Ileal interposition surgery, or ileo-colon-rectoplasty, shows the small intestine can adapt to colon content. This surgical technique is viable for reconstructing bowel transit after extensive colon and rectal resections.
Area of Science:
- Surgical innovation
- Gastrointestinal surgery
- Animal models
Background:
- Reconstructing the gastrointestinal tract after extensive colon and rectal resections presents surgical challenges.
- The use of small bowel segments for colonic reconstruction requires evaluation of functional and morphological adaptation.
Purpose of the Study:
- To assess the functional and morphological changes of small bowel segments (ileum) when interposed between the colon and rectum in pigs.
- To determine the suitability of ileo-colon-rectoplasty for fecal matter transit and reservoir function.
Main Methods:
- Eight pigs underwent isoperistaltic or pouch-shaped ileal interposition (ileo-colon-rectoplasty).
- Radiographic (barium enema) and histologic examinations were performed six months post-operation.
Main Results:
- Interposed ileum showed mucosal adaptation, including villous atrophy and disappearance of folds, due to fecal material contact.
- Isoperistaltic loops exhibited muscular layer hypertrophy; pouch-shaped segments showed no significant morphological changes.
- Radiographic findings and preserved muscular layers suggested adequate reservoir ejection function.
Conclusions:
- The small intestine adapts morphologically to the colonic environment after interposition.
- Ileal interposition (ileo-colon-rectoplasty) is a potentially applicable technique for bowel transit reconstruction post-resection.