|Micrograph showing colonic-type mucosa with follicular lymphoid hyperplasia, as is seen in diversion colitis. H&E stain.|
|Causes||Surgery with diversion of colon (ileostomy or colostomy)|
|Treatment||Short-chain fatty acid enemas|
Diversion colitis is an inflammation of the colon which can occur as a complication of ileostomy or colostomy, where symptoms may occur between one month and three years following surgery. It also occurs frequently in a neovagina created by colovaginoplasty, with varying delay after the original procedure. Despite the presence of a variable degree of inflammation the most suggestive histological feature remains the prominent lymphoid aggregates.
Diagnosis is aided by knowing the full clinical history.
In many milder cases after ileostomy or colostomy, diversion colitis is left untreated and disappears naturally. Possible pharmacologic treatments include short-chain fatty acid irrigation, steroid enemas and mesalazine. For surgical candidates, reanastomosis is a reversal procedure carried out to restore bowel continuity that effectively halts the symptoms of diversion colitis.
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Original source: https://en.wikipedia.org/wiki/ Diversion colitis. Read more