Detection of point mutation in K-ras oncogene at codon 12 in pancreatic diseases

Table 3 Relationship between K-ras gene mutation and location, histologicalal grade and clinical stage of pancreatic carcinomas

Pathologic factor	n	Positive rate (%)
Tumor location
Head	18	55.6
Tail/Corpus	6	66.7
Histological grade
G1	6	66. 7
G2	10	50
G3	8	62.5
Clinical stage
I	1	100
II	3	66.7
III	9	66.7
IV	11	45.5