# anal fistula

> anus disease characterized by an abnormal connection between the epithelialised surface of the anal canal and the perianal skin

**Wikidata**: [Q484765](https://www.wikidata.org/wiki/Q484765)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Anal_fistula)  
**Source**: https://4ort.xyz/entity/anal-fistula


## References

1. Disease Ontology
2. Monarch Disease Ontology release 2018-06-29
3. Freebase Data Dumps. 2013
4. [Source](http://www.patient.co.uk/patientplus/f.htm)
5. [Identifiers.org](https://registry.identifiers.org/registry/doid)
6. Human Phenotype Ontology release 2018-03-08
7. UMLS 2023
8. National Library of Israel Names and Subjects Authority File
9. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)