Immunohistochemical examination results of the tumor were as follows: beta-catenin+, alpha-1-antitrypsin+, CD10+, synaptophysin focally weak+, INSM1 focally weak +, chromogranin A-, trypsin-, CK7-, CK20-, CEA-, CK19-, CDX2-, S-100-, PAX8-, with a 3% Ki-67 proliferation activity. This evidence concerns the gene MKI67 and neoplasm.