Usefulness of synaptophysin immunohistochemistry in an adult case of choroid plexus carcinoma.

Abstract
Choroid plexus carcinoma in an adult case is a very rare tumor and difficult to differentiate from metastatic tumors. The authors report a case of a 49-year-old female with choroid plexus carcinoma who previously had multiple carcinomas. In this case, synaptophysin immunohistochemistry proved to be extremely helpful for the histological diagnosis.