In this analysis, significant differences were observed in the immunoreactivity of peritumoral beta 2 adrenergic receptors, depending on the tumor grading as follows: G1 vs. G2 (710,854 ± 78,174 vs. 763,575 ± 81,950, p = 0.0338) and G1 vs. G3 (710,854 ± 78,174 vs. 796,024 ± 106,601, p = 0.0010) (Figure 3C). Here, ADRB2 is linked to neoplasm.