MKI67 and adrenal cortex carcinoma: It is often assayed during the histopathological examination and has also been used for developing therapeutic methods.14 In the maxillofacial region, Ki-67 has been used for distinguishing between adenoid cystic carcinoma (ACC) and polymorphous low-grade adenocarcinoma (PLGA), two histopathologically similar lesions, but with different biological behavior and clinical outcome.