Dr. Pär Myrelid

Colorectal Surgery

Consultant Colorectal Surgeon and Associate Professor of Surgery

Sweden

Publications

Selected publications from PubMed

Impact of Family History on Colorectal Cancer Risk in Inflammatory Bowel Disease and in Matched General Population Comparators.

Everhov ÅH, Kristjánsson K, Ludvigsson JF, Halfvarson J, Backman AS, Myrelid P, Nordenvall C, Sørensen HT, Askling J, Olén O

Gastroenterology. 2026 Sep 3 pii: S0016-5085(26)07236-7. doi: 10.1053/j.gastro.2026.08.029.

ECCO Guidelines on Therapeutics in Ulcerative Colitis: Medical Treatment.

Gisbert JP, Chaparro M, Verstockt B, Kienle P, Minozzi S, Allocca M, Atreya R, Avellaneda N, Barreiro-de Acosta M, Battat R, Bettenworth D, Blumenstein I, Brown SR, Burke JP, Caprioli F, Casanova MJ, Christou N, de Buck van Overstraeten A, Doherty G, Eder P, El-Hussuna A, Ellul P, Fantini MC, Furfaro F, Greuter T, Hazel K, Holubar S, Kapizioni C, Kopylov U, Leong RW, Leventoglu S, Limdi JK, Noor NM, Papaconstantinou I, Peros G, Pouillon L, Reenaers C, Saibeni S, Schmidt C, Sousa P, Stassen LPS, Uzzan M, Vieujean S, Visser E, Myrelid P, Adamina M, Kucharzik T

J Crohns Colitis. 2026 Jul 7;20(7) pii: jjag066. doi: 10.1093/ecco-jcc/jjag066.

ECCO Guidelines on Therapeutics in Ulcerative Colitis: Surgical Treatment.

Adamina M, Kienle P, Chaparro M, Verstockt B, Minozzi S, Allocca M, Atreya R, Avellaneda N, Barreiro-De Acosta M, Battat R, Bettenworth D, Blumenstein I, Brown SR, Burke JP, Caprioli F, Casanova MJ, Christou N, De Buck Van Overstraeten A, Doherty G, Eder P, El-Hussuna A, Ellul P, Fantini MC, Furfaro F, Greuter T, Hazel K, Holubar S, Kapizioni C, Kopylov U, Leong RW, Leventoglu S, Limdi JK, Noor NM, Papaconstantinou I, Peros G, Pouillon L, Reenaers C, Saibeni S, Schmidt C, Sousa P, Stassen LPS, Uzzan M, Vieujean S, Visser E, Kucharzik T, Gisbert JP, Myrelid P

J Crohns Colitis. 2026 Jun 7;20(6) pii: jjag072. doi: 10.1093/ecco-jcc/jjag072.

The Kock Pouch in Modern Practice Revisited: A Literature Review and Clinically Relevant Summary.

Marjiyeh Awwad R, Myrelid P, Gilshtein H

J Clin Med. 2025 Dec 2;14(23) doi: 10.3390/jcm14238541.

International Survey of Gastroenterologists on Managing Inflammatory Bowel Disease During Pregnancy and Lactation: Current State and the Necessity for Improvements.

Casanova MJ, Gisbert JP, Amiot A, Gordon H, Fiorino G, Flanagan E, Kotze PG, Sokic-Milutinovic A, Sonnenberg E, Nuñez P, Blesl A, Catalán-Serra I, Bossuyt P, Filip R, Bar-Gil Shitrit A, Kagramanova A, Krznaric Z, Molander P, Mantzaris GJ, Juillerat P, Molnar T, Gecse KB, Torres J, Myrelid P, Mahadevan U, Márquez JR, Iade-Vergara BM, Rausch A, Duricova D, Julsgaard M, Chaparro M

United European Gastroenterol J. 2025 Dec;13(10):1999-2011 doi: 10.1002/ueg2.70122.

Featured in

15 min

Ileo-rectal anastomosis in UC: an option to consider

Dr. Pär Myrelid, President of the Swedish Society of Colorectal Surgeons, reviews the evidence on ileorectal anastomosis (IRA) in ulcerative colitis, comparing it to ileal pouch-anal anastomosis (IPAA). Concerning bowel function, reports show that after ileo-rectal anastomosis most patients have between 3 to 6 bowel movements and have better continence scores compared to IPAA, but also have more urgencies. Nevertheless there seems to be no differences in terms of quality of life between IRA and IPAA. There seems to be better physical and sexual functioning with IRA compared to IPAA, especially in Ulcerative Colitis Patients compared to patients with Familial Adenomatous Polyposis. The literature also shows an increase in infertility for IPAA compared to IRA. Dr. Myrelid proposes to offer IRA in UC to young patients as a temporary solution, with late onset or a short history, with poor sphincter function and a controllable rectum. It should not be offered in cases of cancer or dysplasia, proctitis despite topical therapy, hereditary colorectal cancer, primary sclerosing cholangitis or if the rectum is not distensible. Follow-up of the rectum should be done by means flexible endoscopy with multiple random biopsies on a yearly basis, and only in cases of early onset and more than 10 years of duration on a half-yearly basis.

Published

May 2019

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