SQSTM1 and aneurysmal bone cyst: Regarding the background immunohistochemical characteristics of the PCNSLs, p62 showed a strong positive association with MUM1 expression (p = 0.0005, x2 = 17.5), also reflected in the ABC subtype (p = 0.004, x2 = 12.8) and the autophagy groups, since non-MUM1-expressing tumors and GC tumors were associated with the high-autophagy group (p = 0.005, x2 = 10.5 for MUM1 expression and p = 0.002, x2 = 11.6 for GC subtypes, using the four-tiered system of p62 categorization).