ArticleColorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland2026
Anal sphincter function in conservatively managed rectal intussusception at long-term follow-up: A prospective anal acoustic reflectometry study with comparison to healthy volunteer data.
Article in Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimRectal intussusception (RI), proposed to be a progressive condition, is associated with internal sphincter dysfunction. This study examines sphincter function using anal acoustic reflectometry (AAR) at long-term follow-up.
methodsA prospective study of conservatively managed patients attending a tertiary pelvic floor unit. Clinical, AAR and symptom severity data were analysed at baseline and follow-up (>5 years). Patients were grouped into intra-rectal (Oxford I-II) or intra-anal RI (III-IV). Data from asymptomatic volunteers were used to estimate the effect of ageing on AAR parameters.
resultsTwenty-nine patients (27 female; median age: 66 years) were recruited, with follow-up at a median of 66 (IQR: 64-67) months. Twelve were diagnosed with intra-rectal RI and 17 with intra-anal RI at baseline. No patient developed an external rectal prolapse. There were no differences in quality of life, faecal incontinence or constipation symptoms in either group at follow-up (p > 0.05). A non-significant decrease in opening pressure, a measure of internal sphincter function, was seen in both intra-rectal (-4.0 cmH
conclusionThere were no significant changes in patient-reported symptoms or anal sphincter function in conservatively managed RI at follow-up, challenging the concept of a progressive condition with a detrimental impact on sphincter function.
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