Renal Paraganglioma: Report of a Case Managed by Robotic Assisted Laparoscopic Partial Nephrectomy and Review of the Literature

Figure 3

Intrarenal paraganglioma. Low magnification (a) and high magnification (b) of tumor cells (hematoxylin and eosin). Tumor cells forming a “Zellballen pattern” with interspersed thin-walled vascular structures. IHC showed tumor cells are positive for synaptophysin (c), CD 56 (d), and chromogranin (e). Sustentacular cells were positive for S-100, although tumor cells were negative (f). The tumor cells were negatively stained for HMB45 (g), vimentin (h), and CK7 (i).

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