Table 1

Immunohistochemically assessed expression of maspin in pancreatic ductal adenocarcinomas, associated duct lesions, and normal pancreatic tissue

No. of casesStaining intensity (% of cases)
Negative (0)Faint (1)Moderate (2)Strong (3)
Invasive ductal pancreatic adenocarcinoma (n = 24)1a/24 (4) 3/24 (12) 4/24 (17)16/24 (67)
Intraductal carcinoma extension (n = 17)b 0/1710/17 (59) 6/17 (35) 1/17 (6)
PanIN3 (n = 5)b 0/7 6/7 (86) 1/7 (14) 0/7
PanIN 1A, 1B, 2 (n = 8)b 8/8 (100) 0/8 0/8 0/8
Squamous metaplasia, (n = 6)b 0/6 5/6 (83) 1/6 (17) 0/6
Acinar cells and duct epithelium associated with carcinoma (n = 24)24/24 (100) 0/24 0/24 0/24
Acinar cells and duct epithelium of the control cases (n = 3) 3/3 (100) 0/3 0/3 0/3
  • a Clear cell carcinoma.

  • b Number of cases that exhibited intraductal carcinoma extension or the various lesions.