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Figure 1: (a) Renal carcinoid tumor. Grossly it forms a circumscribed mass with a yellow cut surface with foci of hemorrhage. (b) Occasionally, it can have a hemorrhagic and friable cut surface. (c) Microscopically it comprises ribbon and trabeculae of uniform tumor cells, (d) which are positive for synaptophysin immunostain

Figure 1: (a) Renal carcinoid tumor. Grossly it forms a circumscribed mass with a yellow cut surface with foci of hemorrhage. (b) Occasionally, it can have a hemorrhagic and friable cut surface. (c) Microscopically it comprises ribbon and trabeculae of uniform tumor cells, (d) which are positive for synaptophysin immunostain