A retrospective study on safety and Diagnostic yield in using cryobiopsies as a Diagnostic tool in diagnosing patients under investigation for Interstitial lung diseases. This includes a registration of procedural techniques, complications ( pneumthorax, hemorrhage, exacerbation and mortalt), days admitted at the hospital, diagnoses and diagnostic yield.

Inclusion Criteria:

• >18years of age
• suspected of Interstitial lung Disease
• cryobiopsies performed.

Exclusion Criteria:

• FVC below 50% of predicted
• DLCO below 35%
• Body Mass Index (BMI) above 35
• pulmonary hypertension with a tricuspidal gradient above 40 mmHg
• other cardiac or other comorbidities that would increase the risk of complications

Patients under investigation for Interstitial lung diseases that were having cryobiopsies performed.

Participant data and study Protocol can be shared with other researcher upon reasonable request.