Table 10.

Comparisons of general cytological features between CP and CS in ERCP group

	CP vs. CS	No. of cases	p value
Cellularity	CP > CS	0	< 0.001
	CP = CS	13
	CP < CS	20
Bloody background	CP > CS	0	0.014
	CP = CS	27
	CP < CS	6
Dryness	CP > CS	2	0.035
	CP = CS	11
	CP < CS	9
Single atypical cell	CP > CS	0	0.046
	CP = CS	17
	CP < CS	4
Size variation	CP > CS	0	0.083
	CP = CS	18
	CP < CS	3
Nuclear detail	CP > CS	3	1.000
	CP = CS	16
	CP < CS	3
Coarse chromatin	CP > CS	3	0.705
	CP = CS	14
	CP < CS	4

CP, CellPrepPlus; CS, conventional smears; ERCP, endoscopic retrograde cholangiopancreatography.