Please select the eligibility criteria that correspond to the clinical trial below.
Title: Computer-aided Diagnosis of Endoscopic Ultrasound Elastography Used in the Differentiation of Focal Pancreatic Masses
Brief Summary: The aim of the study is to assess elastography during EUS examinations of focal pancreatic masses, and to consequently differentiate benign versus malignant pancreatic masses in a prospective multi-center design.


Options:
A: Inclusion Criteria:

* Patients older than 20 years referred to our medical center for EUS-FNA or FNB with diagnosed or suspected solid pancreatic masses according to clinical evaluation and imaging studies

Exclusion Criteria:

* cystic pancreatic lesions, patients haemodynamically unstable or with severe coagulopathy (international normalized ratio \[INR\] \> 1.5 or platelet count \< 50,000 cells/cubic millimeter \[cmm3\]), patients unable to suspend anticoagulant/anti-platelet therapy, pregnancy, inability or refusal to give informed consent, and refusal to participate in the study.
B: Inclusion Criteria:

1) All patients referred to Florida Hospital Endoscopy Unit for assessment of pancreatic mass lesions that require FNA.

Exclusion Criteria:

1. Age \<19 years
2. Unable to safely undergo EUS for any reason
3. Coagulopathy (INR \>1.6, Prothrombin Time \>18secs, Thrombocytopenia \<80,000 cells/ml)
4. Unable to consent
5. Non-English speaking patients.
6. Participation in any other Clinical Trial (excluding registries and databases)
C: Inclusion criteria

* Patients diagnosed with solid pancreatic tumor masses, with cytological / histological confirmation
* Age 18 to 80 years old, men or women
* Signed informed consent for EUS with elastography and FNA biopsy

Exclusion criteria

* Prior surgical treatment with curative intent or chemo-radiotherapy
* Patients diagnosed with mucin producing tumors, pancreatic cystic tumors, etc.
D: Inclusion Criteria:

* Male or female \> 18 years of age.
* Patient indicated for a first EUS-FNA for a pancreatic cyst, lymph node or pancreatic mass, or
* Patients who had previous non-diagnostic tissue sampling taken during a previous EUS-FNA for pancreatic cyst, lymph nodes, pancreatic mass, more than three months ago.
* Patient with known pancreatic cyst or mass detected at cross-sectional imaging or suspicious lymph nodes reachable via EUSFNA
* Willing and able to comply with study procedures and provide written informed consent to participate in the study.

Add for lymph nodes:

- any lymph node reachable with EUS-FNA

Add for pancreatic mass:

* any size
* any location in the pancreas

Exclusion Criteria:

* Subjects for whom EUS-FNA procedures are contraindicated
* Known allergy to fluorescein dye
* If female, pregnant based on a positive hCG serum or an in vitro diagnostic test result or breast-feeding

Add for cysts:

* Subject with multiple cysts
* size \< 20mm in diameter
* previous EUS-FNA procedure performed less than 3 months ago - Patients suffering chronic calcifying pancreatitis

Add for lymph nodes:

* size \< 5mm in diameter
* If patients present several suspicious lymph nodes, only one of them will be imaged during the nCLE procedure

Add for pancreatic mass:

- If patient present several pancreatic masses, only one of them will be imaged during the nCLE procedure

Answer: C