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Upper gastrointestinal tract phenotype of Crohn's disease is associated with early surgery and further hospitalization.

Inflammatory bowel diseases - 1 Apr 2009

Chow Dorothy K L, Sung Joseph J Y, Wu Justin C Y, Tsoi Kelvin K F, Leong Rupert W L, Chan Francis K L

Abstract excerpt

BACKGROUND: According to the Montreal Classification, upper gastrointestinal tract phenotype L4 is uncommon in Caucasian patients with Crohn's disease (CD) but carries excess risk of recurrence. We studied the clinical course of CD in Chinese patients presenting with the L4 phenotype and factors predicting its occurrence upon longitudinal follow-up. METHODS: This prospective cohort study included 132 Chinese CD...

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PMID: 19067420
DOI: 10.1002/ibd.20804

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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