Florid Proliferation of Hyalinized Vessels in a Spermatic Cord STAT6 Positive Solitary Fibrous Tumor and Its Potential Clinical Implications

Table 2

Comparison of the immunohistochemical profile of classical cellular angiofibroma, SFT, and our patient’s spermatic cord tumor.

Immunostain	Cellular Angiofibroma	SFT	Patient’s Tumor
CD34 [1, 2]	+ (60%)	+ (80-95 %)	+
ER [24, 25]	+ (35%)	–	+ (focal)
PR [24, 25]	+ (55%)	+ (patchy)	+ (focal)
SMA [1, 24]	+ (21%)	+ (20%)	–
S100 [1, 2]	–	– (usually)	–
CD99 [26, 27]	+ (2 of 4 cases reported)	+ (70-94 %)	+
bcl2 [1, 26]	Not reported	+ (30-96 %)	+
STAT6 [3, 28]	–	+ (>95%)	+ (Figure 3(f))