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Table 2 Clinicopathologic characteristics of subtypes

From: Immunohistochemical characterization of subtypes of male breast carcinoma

Subtypes Luminal A
(n = 35)
Luminal B
(n = 7)
Total
(n = 42)
P value*
Demographics     
   Mean age (years) 64 58 63 0.25
   Race     
Caucasian 22 6 28  
African American 6 1 7  
Hispanic 7 0 7  
Histologic type     
   Invasive ductal carcinoma 30 7 37 (88%)  
   Invasive papillary carcinoma 5 0 5 (12%)  
   Other types 0 0 0  
Nuclear grade     0.06
   1 2 0 2  
   2 21 2 23  
   3 12 5 17  
Cases with positive lymph node 14 (41%) 5 (71%) 19 (45%) 0.40
Mean number of positive lymph nodes 1.5 2.3 1.6 0.40
Stage grouping     
   I 9 1 10  
   IIA 10 3 13  
   IIB 9 2 11  
   IIIA 2 0 2  
   IIIB 4 1 5  
   IV 1 0 1  
  1. * Fisher's exact test.