Utility of Tissue Transglutaminase Immunohistochemistry in Pediatric Duodenal Biopsies: Patterns of Expression and Role in Celiac Disease—A Clinicopathologic Review

Table 2

(a) Breakdown of cases of celiac disease by pattern of tTG expression. (b) Breakdown of cases of celiac disease by serum tTG and serum EMA results.

(a)  

Pattern of expression	tTG surface positive/crypt negative	tTG surface positive/crypt positive	tTG surface/crypt negative
No. of cases (total 36)	27	3	6

(b)  

	Serum tTG elevated	Serum EMA elevated	Serum not tested
No. of cases (total cases 36)	26 of 26 tested	26 of 30 tested (4/30 not elevated)	6 not tested for EMA; 10 not tested for serum tTG