Desmoplastic Small Round Cell Tumor, a “Floating Island” Pattern in Pleural Fluid Cytology: A Case Report and Review of the Literature

Figure 3

Liquid-based cytology slides contained rare crowded groups of lesional cells with nuclear overlapping, high nuclear/cytoplasmic ratios, open chromatin, and small but discernible nucleoli. These cells were difficult to differentiate from reactive mesothelial cells by microscopy (ThinPrep, Papanicolaou stain, 600x).