Our purpose is to list some clinical and anatomical states related to sigmoidorectal intussusception, and to report a case.
Acute attacks of sigmoidorectal intussusception cause lower abdominal, pelvic, or perineal pain, which starts suddenly and is relieved promptly by reduction of the intussusception.7,12
For at least 75 years proctologists have discussed sigmoidorectal intussusception, noting that procidentia occurs intermittently and rarely becomes incarcerated.1
Unstable colon, discussed by Granet, consists of a redundant sigmoid with a long mesentery. The sigmoid slides into a capacious rectum held in situ by fascia. Granet terms this a procidentia of the sigmoid and recommends conservative treatment.2,3
Chronic intussusception is a term used by some, decried by others.4,5,13 Still's four cases (three ileocecal, one ileocolic) described in 1921 had intussusception verified to have existed from 21 to 42 days. Emaciation ensued, although other symptoms were mild after the onset. Each had surgical reduction
TULLIS RH, WELSH JB. Sigmoidorectal Intussusception in Children: Recurrent Acute Attacks Without Incarceration or Obstruction. AMA Arch Surg. 1959;79(4):690–692. doi:10.1001/archsurg.1959.04320100156027
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