raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:487809

Pediatric collagenous gastritis

Synonyms: Childhood-onset collagenous gastritis

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
Adolescent, Childhood, Infancy
Status
active

A rare gastroenterologic disease characterized by the histopathological finding of a thickened (> 10 µm) gastric subepithelial collagen layer in association with an inflammatory infiltrate in the lamina propria. Patients typically present with upper abdominal pain and severe iron deficiency anemia. The condition is not commonly associated with autoimmune diseases, and involvement of the colon is less frequent than in the adult form. The disease takes a generally benign course with limited long-term morbidity and no increased mortality.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPediatric collagenous gastritisChildhood-onset collagenous gastritis
frGastrite collagène pédiatrique
deGastritis, kollagene, pädiatrischeKollagene Gastritis des Kindes
esGastritis colagenosa pediátricaGastritis colagenosa de inicio en la infancia
itGastrite collagenosa pediatrica
nlPediatrische collagene gastritisCollagene gastritis met aanvang in de kindertijd
ptGastrite colagenosa pediátrica
plZapalenie kolagenowe żołądka wieku dziecięcegoZapalenie kolagenowe żołądka o początku w wieku dziecięcym
csDětská kolagenní gastritidaKolagenní gastritida s nástupem v dětství
ukКолагеновий гастрит у дітейКолагеновий гастрит у дитячому віці
zh儿童胶原性胃炎= en
trPediatrik kollajenöz gastritÇocuklukta başlayan kollajenöz gastrit

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10K29.6NTBTattributedvalidated
ICD-11DA42.YNTBTattributedvalidated
MONDO0044624Evalidated
UMLSC5680109Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families24 casesWorldwideCase(s)Validated23538318[PMID]_25789098[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_25789098[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card