Table 1.

The frequency of lymphovascular space invasion identified by conventional H&E staining compared with dual immunostaining for CK and CD31

	CD31 and CK staining
H&E staining	Present	Absent	Total
Present	15 (14%)	2 (1.8%)	17 (16%)
“Probable”	2 (2%)	2 (2%)	4 (4%)
Absent	41 (38%)	46 (43%)	87 (80%)
Total	58 (54%)	50 (46%)	108

CK, pancytokeratin; H&E, haematoxylin and eosin.