FGFR2 and carpal tunnel syndrome: The expression of FGFR2 in blood vessels of control samples (20.50% ± 7.74%) was significantly higher compared to CTS samples (8.90% ± 3.00%; p = 0.005; d = 1.978), while it was significantly lower than in DUF (42.90% ± 11.41%; p = 0.001; d = 2.298) and DAF samples (31.60% ± 5.32%; p = 0.010; d = 1.672).