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Fig. c9t3P41: The basic cytologic features are represented, but plump, rounded cells and muciparous cells are not a feature. The matrix is myxoid.
Fig. c9t3P42: Muciparous cells and vessels with thickened walls are represented. A multinucleated giant cells is present near the left margin of the field.
Fig. c9t3P43: With a Movat stain, the background matrix is myxoid.
Fig. c9t3P44: The matrix is myxoid. A small red arrow near the bottom of the field on the right points to a muciparous cell.
Fig. c9t3P45:With a methyl green pyronine stain, the tumor cells show a positive, lavender reaction (pyroninophilia).
Fig. c9t3P46: Tumor cells form whorls around regularly spaced, small vessels. Some of the cells are rounded in outline.
Fig. c9t3P47:Reactive dendritic cells are loosely sprinkled among tumor cells. There are scattered, small lytic defects (factor XIIIa).
Fig. c9t3pP48: Positive dendritic cells (histiocytes) are richly spaced among tumor cells. They are molded about some of the plump, round cells (factor XIIIa).
Fig. c9t3P49: Dendritic histiocytes are intensely stained; the cytoplasm of some of the tumor cells are weakly stained (factor XIIIa).
Fig. c9t3P50: Positive dendritic histiocytes are sprinkled among plump, round cells in a whorl of cells (S-100 protein).
