ANZ journal of surgery · 2022
Long-term adverse effects and healthcare burden of rectal cancer radiotherapy: systematic review and meta-analysis.
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Morton Alastair J, Rashid Adil, Shim Joanna S C, West Joe, Humes David J, Grainge Matthew J
Аннотация
BACKGROUND: As rectal cancer survival increases, more patients survive with potentially severe, long-term gastrointestinal and genitourinary complications from radiotherapy. The burden of these complications for patients and healthcare services is unclear, which this review aims to quantify.
METHODS: Systematic search of Medline and Embase for randomized-controlled trials (RCTs) and multicentre observational studies published since 2000, reporting hospitalization/procedural intervention for long-term (>6 months post-treatment) gastrointestinal or genitourinary complications after radiotherapy and surgery for rectal cancer. Prevalence values were pooled in a meta-analysis assuming random effects. Organ-preservation patients were excluded.
RESULTS: 4044 records screened; 24 reports from 23 studies included (15 RCTs, 8 Observational), encompassing 15 438 patients. Twenty-one studies (median follow-up 60 months) reported gastrointestinal complications post-radiotherapy: pooled prevalence 11% (95% confidence interval (95% CI) 8-14%). Thirteen reported small bowel obstruction: prevalence 9% (95% CI 6-12%), a 58% increased risk compared with surgery alone (RR 1.58, 95% CI 1.26-1.98, n = 5 studies). Seven reported fistulas: prevalence 1% (95% CI 1-2%). Thirteen reported genitourinary complications: prevalence 4% (95% CI 1-6%); RR 1.10 (95% CI 0.88-1.38, n = 3 studies) compared with surgery alone.
CONCLUSIONS: Over 10% of patients are hospitalized for long-term complications following rectal cancer radiotherapy. Serious gastrointestinal complications are commonplace; late small bowel obstruction is more common in patients having radiotherapy and surgery compared with surgery alone. Patients and clinicians need to be aware of these risks.
METHODS: Systematic search of Medline and Embase for randomized-controlled trials (RCTs) and multicentre observational studies published since 2000, reporting hospitalization/procedural intervention for long-term (>6 months post-treatment) gastrointestinal or genitourinary complications after radiotherapy and surgery for rectal cancer. Prevalence values were pooled in a meta-analysis assuming random effects. Organ-preservation patients were excluded.
RESULTS: 4044 records screened; 24 reports from 23 studies included (15 RCTs, 8 Observational), encompassing 15 438 patients. Twenty-one studies (median follow-up 60 months) reported gastrointestinal complications post-radiotherapy: pooled prevalence 11% (95% confidence interval (95% CI) 8-14%). Thirteen reported small bowel obstruction: prevalence 9% (95% CI 6-12%), a 58% increased risk compared with surgery alone (RR 1.58, 95% CI 1.26-1.98, n = 5 studies). Seven reported fistulas: prevalence 1% (95% CI 1-2%). Thirteen reported genitourinary complications: prevalence 4% (95% CI 1-6%); RR 1.10 (95% CI 0.88-1.38, n = 3 studies) compared with surgery alone.
CONCLUSIONS: Over 10% of patients are hospitalized for long-term complications following rectal cancer radiotherapy. Serious gastrointestinal complications are commonplace; late small bowel obstruction is more common in patients having radiotherapy and surgery compared with surgery alone. Patients and clinicians need to be aware of these risks.