Figure 1.

Composite figure of carcinoid tumor of urinary bladder. A) a glandular arrangement of tumor cells is evident. B) normal urothelium lined the tumor. A von Brunn nest entrapped by the tumor is seen. C-D-E) diffusely positive synaptophysin, chromogranin, and calcitonin immunostaining of tumor cells, respectively. F) urothelium and tumor cells strongly reacted with keratin 7.

Mascolo et al. BMC Cancer 2005 5:88   doi:10.1186/1471-2407-5-88
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