Pinnae fistula or cyst

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Pinnae fistula or cyst

ORPHA:155838Morphological anomaly

What it is

Pinnae fistula or cyst is a rare otorhinolaryngological malformation characterized by the presence of a, usually unilateral, sinus tract or cyst located in the vicinity of the auricle (most frequently identified by a small pit near the anterior margin of the first ascending portion of the helix). Typically, patients are asymptomatic and usually only present symptoms (pain, erythema, discharge from pit) in relation to infection. Renal and inner ear anomalies may be associated.

Key facts

Classified as
Morphological anomaly

ICD-10 codes

Q18.1filed under a broader ICD-10 category

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0015477UMLS C5680633

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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