borderline significancep = 0.050
Several histopathological parameters indicated a higher degree of biological aggression in the IHC-loss group: Tumor Necrosis: Microscopic coagulative necrosis was detected in 7 of 19 IHC-loss tumors (36.8%), whereas it was present in 36 of 195 wild-type tumors (18.5%) ( p = 0.050; borderline significance).