PMC9153994_01
Computed tomographic imaging: The enhanced computed tomographic (CT) scan revealed a mass of 30x40 mm in the upper pole of left renal that was classified as Bosniak category IV.
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Enhanced abdominal CT showed a mass of 30 x 40 mm in the upper pole of left renal that was classified as Bosniak category IV (Figure 1).
Pathological features of the renal carcinoid: (A) H&E (x100) showing nests and cords of neuroendocrine cells, which were arranged in a rosette like structure; (B) Positive immunostaining in tumor cells with synaptophysin (x200); (C) Intense positive immunostaining for chromogranin in tumor cells (x100); (D) Positive immunostaining in tumor cells with CD56 (x200); (E) Positive immunostaining in tumor cells with neuron specific enolase (x100).
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Postoperative pathology showed left renal carcinoid tumor (neuroendocrine tumor) (Figure 2).