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Updated: Jan 22, 2026
Direct Drug Delivery to Kidney via the Renal Artery
Published on: April 17, 2021
[A Case of Renal Oncocytosis with Bilateral Multiple Renal Masses]
Takashi Matsuoka1, Issei Suzuki1, Ryosuke Suzuki1
1The Department of Urology, Kobe City Medical Center General Hospital.
Abstract:
A 63-year-old man with microscopic hematuria underwent contrast-enhanced CT, which showed multiple bilateral renal masses. Percutaneous biopsy results indicated renal oncocytosis. The tumors remained unchanged for 3 years. Renal oncocytosis is a very rare tumor, but it is an established disease entity characterized by numerous oncocytic tumors and diffuse (sporadic) renal parenchymal epithelial oncocytic changes on an analysis histopathology. Although renal oncocytosis can be sporadic or part of Birt-Hogg-Dube syndrome (BHDS), our case did not associate with BHDS because of absence of lung cyst.
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