GH1 and neoplasm: Further analysis of the risk factors of the residual tumor after first TSA showed that higher GH level at diagnosis (p = 0.003), presurgical tumor size (>2 cm, p < 0.001; >1 cm, p = 0.002), with DI syndrome (p = 0.036), and had histology subtype of SGSA (p = 0.005) were all significantly correlated with residual tumor (Table 4).