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- Case Report Cytology of Follicular Dendritic Cell Sarcoma on Intraoperative Touch Imprint Smears: A Case Report.
- Ju Young Song, Xian Ji Jin, Jee Young Han, Lucia Kim, In Suh Park, Joon Mee Kim, Young Chae Chu, Suk Jin Choi
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Journal of Pathology and Translational Medicine 2009;43(6):589-593
DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.6.589
2Department of Pathology, Inha University Graduate School of Medicine, Incheon, Korea.
Abstract
Follicular dendritic cell (FDC) sarcoma is a neoplastic proliferation of FDCs. Because its cytologic findings can vary widely, both the cytomorphology and histopathology of FDC sarcoma can impose a significant diagnostic dilemma. We present cytologic features of FDC sarcoma assessed by intraoperative touch imprint. Intra-abdominal lymphadenopathies were noted in 54-year-old male with hepatitis B-virus associated liver cirrhosis. In contrast to cytologic features of classical FDC sarcoma, the tumor cells featured a large epithelioid or Reed-Sternberg cell-like shape scattered in a background with abundant inflammatory cells, which led to a mistaken diagnosis of malignant lymphoma. However, in accordance with cytologic features previously described in the literature, the tumor cells were characterized by a fragile cytoplasm with cytoplasmic processes in dendritic or reticulated patterns reminiscent of the ultrastructural features of FDC. Cytoplasmic features rendering nuclei with a tendency to form clusters or syncytial aggregates associated with reactive lymphocytes appear to be the most valuable finding in diagnosis of FDC sarcoma.
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