Neoplastic Process
renal oncocytoma
Definitions related to oncocytoma, renal:
  • (renal oncocytoma) A renal tumor originating from an oncocyte, which is an epithelial cell characterized by an excessive amount of mitochondria, resulting in an abundant acidophilic, granular cytoplasm.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • (kidney oncocytoma) A benign tumor of the kidney, characterized by the presence of large cells with abundant eosinophilic granular cytoplasm. The majority of these tumors are discovered incidentally, during work-up of other conditions.
    NCI
    U.S. National Cancer Institute, 2021
  • Renal oncocytoma is a benign (noncancerous) growth of the kidney. They generally do not cause any signs or symptoms and are often discovered incidentally (by chance) while a person is undergoing diagnostic imaging for other conditions. Some people with renal oncocytoma will have abdominal or flank pain; blood in the urine; and/or an...
    NIH Genetic and Rare Diseases
    National Center for Advancing Translational Sciences
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