CALB2 and olfactory neuroblastoma: Since it was found expressed in mesothelioma in 1990s [34], many types of tumor and tissue are found immunocreactive to calretinin including 22.5% of examined colonic carcinomas [35], 81.5% of ameloblastomas [36], 36% of thymic carcinomas [10], 100% of cardiac myxomas [37], 56-100% sex cord-stromal and 90-100% fibrous neoplasms of the ovaries [38-40], 95% olfactory neuroblastoma [41], 95% of adrenal cortical tumors [42], 71% of synovial sarcomas [43], 15% breast carcinomas [44], skin [45] and others [46].