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Table 2 Immunohistochemical scoring (IHS) of the expression of M2-PK in malignant and benign pancreatic tissue microarrays.

From: Complete absence of M2-pyruvate kinase expression in benign pancreatic ductal epithelium and pancreaticobiliary and duodenal neoplasia

TISSUE (n) IMMUNOHISTOCHEMICAL SCORE [n (%)]
  0 1 2-3 4-5 6-7 8-9 10-12
Pancreatic ductal adenocarcinoma (44) 44 (100)       
   Tumour in lymph nodes (26) 26 (100)       
   Chronic pancreatitis (36)   2 (6) 30 (83) 4 (11)    
   Normal pancreas (8)    7 (87.5)    1(12.5)  
Ampullary adenocarcinoma (31) 31 (100)       
   Tumour in lymph nodes (20) 20 (100)       
   Chronic pancreatitis (26) 9 (34.6)   6 (23) 7 (27)   4 (15.4) 9 (34.6)
   Normal pancreas (8)     2 (25) 4(50) 1 (12.5) 1 (12.5)
Cholangiocarcinoma (24) 24 (100)       
   Tumour in lymph nodes (12) 12(100)       
   Chronic pancreatitis (11)   2 (18.1) 5 (45.5) 4 (36.4)    
   Normal pancreas (11)    5 (45.5) 5 (45.5) 1 (9)   
Duodenal adenocarcinoma (5) 5 (100)       
   Tumour in lymph nodes (3) 3 (100)       
   Chronic pancreatitis (5)    4 (80)   1 (20)   
   Normal pancreas (1)     1 (100)    
Chronic pancreatitis (22)   12 (54.5)   8 (36.5) 2 (9)   
   Normal pancreas around pancreatitis (2)     1 (50) 1 (50)