MKI67 and neoplasm: • Sensitivity is higher in 5-ALA (0.85) compared with iMRI (0.41)• 5-ALA correlated with final histological diagnosis significantly, whereas iMRI had nonsignificant correlation• 5-ALA correlated with Ki-67 index and vascular proliferations, whereas no correlations were found for iMRI• High number of tumor-positive areas were missed in iMRI (false-negatives)