38. Renal oncocytoma Flashcards Preview

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Flashcards in 38. Renal oncocytoma Deck (8):
1

defition / origin

benign epithelial cell tumor arising from collecting ducts

2

gross apperance

well circumscribed mass with central scar

3

histological apperance

Large eosinophilic cells with abundant mitochondria WITHOUT PERINUCLEAR CLEARING vs chromophobe renal cell carcinoma

4

clinical manifestations

1. painless hematuria
2. flank pain
3. abdominal mass

5

treatment

often resected to exclude malignancy

6

renal oncocytoma vs chromophobe renal cell carcinoma according to histoloyy

renal oncocytoma --> without perniuclear clearing
renal cell carcinoma ---> perinucreal halos usually prominent

7

• Renal oncocytoma is a ___ (benign/malignant) epithelial cell tumor.

Benign

8

• Despite being benign, all renal oncocytomas are resected. Why is this the case?

It is important to rule out far more sinister conditions, such as a renal cell carcinoma

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