Renal oncocytoma

What it means

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.

Renal oncocytoma is seen in Birt-Hogg-Dube syndrome (OMIM 135150).

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category