PMC3307470_01
Intact insular aggregates of small cells amidst fibrovascular stroma (Pap, x100) with (inset) an intact insula enveloped by a single layer of endothelial cells (Pap, x400)
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PMC3307470_01_JCytol-29-97-g001.jpg
F1
Fine needle aspiration cytology (FNAC) of the mass showed high cellularity composed of monomorphic small cells arranged in microfollicles, crowded groups with well-defined borders [Figure 1] and numerous single cells. Stromal fragments separating the nests [Figure 1] and minimal necrotic debris was seen. They had sharp borders that were encircled by endothelial cells [Figure 1 inset].