Primary Villoglandular Mucinous Adenocarcinoma of the Vulva

Figure 3

Immunohistochemical feature of the tumor cells. (a, b) Almost all tumor cells are positive for (a) CK20, but the cells are negative for (b) CK7. (c, d) Major proportion of tumor cells is positive for (c) MUC2, but expression of (d) MUC6 is negative. (e) CDX2 is positive for the nucleus of the tumor cells. (f) 40–50% of tumor cells are positive for MIB1.

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