Table 2.

PCR Data on K-ras Positivity in PanIN Lesions Associated with Various Pancreatic Disorders.

	Technique				Total
	PCR		Me-PCR
	K-ras+/Total Foci	K-ras+ % (95% CI)	K-ras+/Total Foci	K-ras+ % (95% CI)	K-ras+/Total Foci	K-ras+ % (95% CI)
PDAC
PanIN-1A	43/172	25 (19–32)	115/266	43 (37–49)	158/438	36 (32–41)
PanIN-1B	46/121	38 (29–47)	27/44	61 (46–75)	73/165	44 (37–52)
PanIN-2–3	67/76	88 (78–94)	7/9	78 (40–96)	74/85	87 (78–93)
Chronic pancreatitis
PanIN-1A	20/159	13 (8–19)	1/17	6 (0–31)	21/176	12 (8–18)
PanIN-1B	12/121	10 (5–17)	-	-	12/121	10 (5–17)
PanIN-2–3	1/35	3 (0–17)	2/15	13 (2–42)	3/50	6 (2–18)
Normal pancreas
PanIN-1A	30/243	12 (9–17)	9/51	18 (9–31)	39/294 13	(10–18)
PanIN-1B	6/173	3 (1–8)	8/17	47 (24–71)	14/190	7 (4–12)