Pilonidal cyst


No definition available.

Endpoint definition

FinnGen phenotype data

392423 individuals

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Apply sex-specific rule None


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Check conditions None


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Check pre-conditions, main-only, mode, registry filters

Hospital Discharge: ICD-10 L05
Hospital discharge: ICD-9 685
Cause of death: ICD-10 L05
Cause of death: ICD-9 685

2 out of 7 registries used, show all original rules.


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Check minimum number of events None


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Include endpoints None


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Remove individuals based on genotype QC


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Control definitions

Control exclude L12_INFECT_SKIN

Extra metadata

Level in the ICD hierarchy 3
First used in FinnGen datafreeze DF2
Parent code in ICD-10 L00-L08
Name in latin Cysta pilonidalis

Summary Statistics

Key figures

All Female Male
Number of individuals 2739 1058 1681
Unadjusted prevalence (%) 0.73 0.50 1.01
Mean age at first event (years) 32.56 29.41 34.55


Follow-up Absolute risk HR [95% CI] p N
1998–2019 0.03 2.03 [1.27, 3.26] 3.3e-3 104
15 years 0.01 1.61 [1.03, 2.52] 3.6e-2 45
5 years 0.00 2.11 [1.18, 3.78] 1.2e-2 14
1 year - - - -

Age distribution of first events

Year distribution of first events

Cumulative Incidence


Index endpoint: L12_PILONIDALCYST – Pilonidal cyst
GWS hits: 4

Survival analyses between endpoints


before Pilonidal cyst
after Pilonidal cyst

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Drugs most likely to be purchased after Pilonidal cyst

Endpoint not on priority list, no data to show.