Primary anastomosis vs loop ileostomy in refractory ileocolonic CD

What is known

• The literature poses diversion as a selective decision, dedicated analyses ask when to add a diverting loop ileostomy to ileocolic resection rather than treating it as routine. ^1,2
• Recognized predictors of intra-abdominal septic complications after ileocolic resection (e.g., preoperative optimization factors, positive proximal margin) are cited as the basis for selecting high-risk anastomoses for diversion. ^1,3
• A temporary-ileostomy vs primary-anastomosis cohort specifically examined whether diversion affects long-term disease recurrence, indicating this is an active comparative question. ⁴

What is unknown / caveats

• Retrieved chunks are largely reference lists and titles; no head-to-head complication rates for anastomosis vs loop ileostomy are quantified in the excerpts
• The specific risk thresholds that should trigger diversion are named as study topics but not extractable from the provided text
• The excerpts identify the risk-stratified framework but do not provide the numeric complication or recurrence outcomes needed to weigh the two options directly.

References

1. [No authors listed]. A novel surgical classification system for ileocolic Crohn's disease: "It is not just ileocolic disease". Surgery. 2025;184:109426. PMID: 40499308.

2. Holubar SD, Lipman J, Steele SR, Uchino T, Lincango EP, Liska D, Ban K, Rosen D, Sommovilla J, Gorgun E, Kessler H, Valente M, Hull T. Safety & feasibility of targeted mesenteric approaches with Kono-S anastomosis and extended mesenteric excision in ileocolic resection and anastomosis in Crohn's disease. Am J Surg. 2024;230:16-20. PMID: 37914660.

3. Celentano V, Pellino G, Spinelli A, Selvaggi F, SICCR Current status of Crohn’s disease surgery C, Celentano V, Pellino G, Rottoli M, Poggioli G, Sica G, Giglio MC, Campanelli M, Coco C, Rizzo G, Sionne F, Colombo F, Sampietro G, Lamperti G, Foschi D, Ficari F, Vacca L, Cricchio M, Giudici F, Selvaggi L, Sciaudone G, Peltrini R, Manfreda A, Bucci L, Galleano R, Ghazouani O, Zorcolo L, Deidda S, Restivo A, Braini A, Di Candido F, Sacchi M, Carvello M, Martorana S, Bordignon G, Angriman I, Variola A, Di Ruscio M, Barugola G, Geccherle A, Tropeano FP, Luglio G, Tanzanu M, Sasia D, Migliore M, Giuffrida MC, Marrano E, Moretto G, Impellizzeri H, Gallo G, Vescio G, Sammarco G, Terrosu G, Calini G, Bondurri A, Maffioli A, Zaffaroni G, Resegotti A, Mistrangelo M, Allaix ME, Botti F, Prati M, Boni L, Perotti S, Mineccia M, Giuliani A, Romano L, Graziano GMP, Pugliese L, Pietrabissa A, Delaini G, Spinelli A, Selvaggi F, , on behalf of the Italian Society of Colorectal Surgery SICCR. Anastomosis configuration and technique following ileocaecal resection for Crohn's disease: a multicentre study. Updates Surg. 2021;73(1):149-156. PMID: 33409848.

4. [No authors listed]. Ileocolic resection with temporary ileostomy for Crohn's disease: does it affect long-term disease recurrence compared with primary anastomosis?. ANZ J Surg. 2025;95(1-2):143-150. PMID: 39297737.

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Draft, generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct.