Perineurioma of the kidney. Report of a case with histologic, immunohistochemical, and ultrastructural studies.
case_report · Level V
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Abstract
We report a perineurioma of the kidney. A 66-year-old woman had a renal mass discovered as an incidental finding during the evaluation of hypertension and proteinuria. This neoplasm radiographically mimicked renal cell carcinoma, but the diagnosis of perineurioma was confirmed with histologic and ultrastructural studies. Perineurioma is a recently described, rare, benign tumor of the peripheral nervous system composed of perineurial cells. Histologically, the differential diagnosis includes low-grade fibromyxoid sarcoma and other myxoid tumors.
Medical subject headings
- Kidney Neoplasms
- Neurilemmoma