Endoscopic ultrasound-assisted transmural cholecystoduodenostomy or cholecystogastrostomy as a bridge for per-oral cholecystoscopy therapy using double-flanged fully covered metal stent

Table 1 Gallbladder function classification (fat meal test)

Grade	Empty	30 min	60 min	90 min
I	Well-filling cyst of normal size and shape	obvious	>1/2	>3/4
II	Mild changes in the morphology of cyst	mild	>1/3	>1/3
III	Gallbladder shrinkage and wall thickening (4–5 mm)	no	<1/3	<1/3
IV	Atrophy of the cyst	no	no	no

ISSN: 1471-230X