Primary Angiosarcoma of the Thyroid in an Asian Woman: A Case Report with Review of the Literature

Table 2

Immunohistochemical features.

Immunostain	Number of positive staining	Number of negative staining	Not performed
CD31	48 (100%)	0	11
CD34	21 (44.7%)	26	12
Factor VIII	42 (91.3%)	4	13
FLI-1	6 (100%)	0	53
ERG	4 (100%)	0	55
CK	30 (65.2%)	16	13
EMA	6 (18.8%)	26	27
CAM5.2	9 (75%)	3	47
TG	0	47 (100%)	12