Cytomorphology, ultrastructural, and cytogenetic findings in follicular dendritic cell sarcoma: a case report.

Abstract

Although the cytomorphology of FDC sarcoma is characteristic, a preoperative diagnosis of FDC sarcoma based on fine needle aspiration cytology is very challenging, if not impossible. Immunohistochemistry is always necessary for rendering and/or confirming the diagnosis, and ultrastructural studies are helpful.