Round cell sarcoma with CIC-DUX4 gene fusion: Discussion of the distinctive cytomorphologic, immunohistochemical, and molecular features in the differential diagnosis of round cell tumors
文摘
Undifferentiated round cell sarcomas are a heterogeneous group, and include tumors that resemble the Ewing sarcoma family. Although a subset defined by recurrent CIC-DUX4 gene fusion has been recently characterized, data regarding the cytomorphologic features are currently limited. Two recent fine-needle aspiration (FNA) cases prompted review of the spectrum of round cell tumors in the differential diagnosis to determine distinctive diagnostic features.