The IBD phenotype associated with PSC

What is known

• PSC-IBD is characterized as a distinct/unique IBD phenotype in dedicated studies. ^1,2
• The IBD associated with PSC is reported to be mild, right-side predominant, and prone to rectal sparing. ³
• PSC is associated with IBD in approximately 70% of cases. ²

What is unknown / caveats

• Several retrieved items are reference lists rather than detailed phenotype findings
• Excerpts do not provide granular data on colonic extent, backwash ileitis, or cancer risk
• The excerpts describe the general pattern but do not quantify the individual features or address whether patterns differ by liver-disease subtype.

References

1. Boonstra K, van Erpecum KJ, van Nieuwkerk KM, Drenth JP, Poen AC, Witteman BJ, Tuynman HA, Beuers U, Ponsioen CY. Primary sclerosing cholangitis is associated with a distinct phenotype of inflammatory bowel disease. Inflamm Bowel Dis. 2012;18(12):2270-6. PMID: 22407885.

2. Palmela C, Peerani F, Castaneda D, Torres J, Itzkowitz SH. Inflammatory Bowel Disease and Primary Sclerosing Cholangitis: A Review of the Phenotype and Associated Specific Features. Gut Liver. 2018;12:17-29. PMID: 28376583.

3. Schaeffer DF, Win LL, Hafezi-Bakhtiari S, Cino M, Hirschfield GM, El-Zimaity H. The phenotypic expression of inflammatory bowel disease in patients with primary sclerosing cholangitis differs in the distribution of colitis. Dig Dis Sci. 2013. PMID: 23670229.

For educational use only, not a substitute for clinical judgement or medical advice. Consult qualified clinicians for diagnosis and treatment decisions. This tool may contain errors; use the flag button below to report inaccurate or harmful content.

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.