This study intends to investigate the long term follow-up of small non-inflammatory pancreatic cysts.

This study intends to investigate the long term follow-up of small non-inflammatory pancreatic cysts in a multicenter setting.

Inclusion criteria:

Patients with non-inflammatory pancreatic cystic lesions up to 3 cm in diameter referred to the University Hospital Hamburg Eppendorf, Israelitic Hospital Hamburg, Sana Klinikum Lichtenberg, Berlin and Krankenhaus Märkisch-Oderland,Strausberg from 2002 to 2007 identified from EUS database.

Study design:

At least 5 year-long term follow up by inclusion of clinical data, cross sectional imaging if available or actual US findings.

Primary outcome:

To determine the proportion of patients with increase is size and/or changed appearance

Secondary outcomes:

Rate of patients undergo pancreatic surgery (indication, histology of resected specimen). Rate of patients undergo FNA (fluid analysis, cytology).

Inclusion Criteria:

• Patients with non-inflammatory pancreatic cystic lesions up to 3 cm in diameter

Exclusion Criteria:

• acute or chronic pancreatitis
• pancreatic cysts > 3 cm
• Lesion suspicious for malignancy

Patients with non-inflammatory pancreatic cystic lesions up to 3 cm in diameter referred to the University Hospital Hamburg Eppendorf, Israelitic Hospital Hamburg, Sana Klinikum Lichtenberg, Berlin and Krankenhaus Märkisch-Oderland,Strausberg.