Endoscopic ultrasound fine needle aspiration: Technique and applications in clinical practice

Table 1 Endoscopic ultrasound-guided fine needle aspiration needles

Manufacturer, model	Needle diameter (gauge)	Intended sample
Cook
Echo-tip ultra	25, 22, 19G1	Aspirated cells
Quick-core	19G	Core biopsy
Procore	22, 19G	Core biopsy
Mediglobe
Sonotip II	25, 22, 19G	Aspirated cells
Olympus2
Power-shot3	22G	Aspirated cells
EZ-shot	22G	Aspirated cells

¹19G needle have been used to acquire core biopsy samples;

²Compatible only with Olympus scopes;

³Reusable. G: Gauge.

Table 2 Characteristics of pancreatic cystic lesions

	Cytology	Viscosity	Cyst CEA levels	Cyst amylase level
Serous cyst adenoma	Bland PAS+	Low	Low	Low
Mucinous cyst	Mucinous	Increased	High	Low
IPMN	Mucinous	High	High	High
Pseudocyst	Pigmented histiocytes	Low	Low	High

CEA: Carcinoembryonic antigen; IPMN: Intraductal papillary mucinous neoplasms.