Figure 3From: Primary micro neuroendocrine tumor arising in a horseshoe kidney with cyst: report of a case and review of literatureThe tumor cells were positively stained for chromogranin (A); the tumor cells showed cytoplasmic diffuse and strongly expression of synaptophysin (B); the positivity for neuron-specific enolase is weak and focal (C); tumor cells showed necleus diffuse and strongly expression of CD99 (D). Original magnification × 200.Back to article page