Alfa-Fetoprotein-Producing Female Primary Urethral Adenocarcinoma with Neuroendocrine Differentiation

Figure 4

Immunohistochemical findings. (a) Tumor cells strongly positive stained for AFP (×200). (b) Positive staining for CD56 (×200). (c, d) Several cells were immunohistochemically positive for (c) chromogranin A (×200, arrowheads) and (d) synaptophysin (×200, arrowheads).

(a)

(b)

(c)

(d)