What is an oncocytoma of the kidney?

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.

Is oncocytoma a cancer?

Oncocytoma is a benign solid tumor that arises from the proximal renal tubule. Most are seen in men in their 60s. Unfortunately, no imaging test can reliably differentiate these benign tumors from RCC. Treatment is surgical.

What is the pathophysiology of renal cell carcinoma?

The two most common genes involved in the pathogenesis of RCC are the Von Hippel–Lindau ( VHL) gene and the protein polybromo-1 ( PBRM-1) gene. These will be discussed separately in this article. The most common acquired risk factors for RCC are smoking, hypertension, obesity, chronic analgesic use, and diabetes 7.

Can oncocytoma metastasize?

Results and Conclusions. The World Health Organization classifies renal oncocytoma as benign neoplasm. Nevertheless there are case reports of metastatic disease in these tumours.

How common is oncocytoma?

The salivary gland oncocytoma is a well-circumscribed, benign neoplastic growth also called an oxyphilic adenoma. It comprises about 1% of all salivary gland tumors.

Where is oncocytoma found?

Although rare in salivary glands, oncocytomas can be found mainly in the excretory ducts, also known as intercalated ducts, of minor salivary glands and parotid glands.

Where are oncocytoma found?

What does Oncocytic mean?

Oncocytes are cells that have abundant eosinophilic cytoplasm due to the accumulation of mitochondria; they are also known as oxyphils.

What is Oncocytic carcinoma?

Oncocytic carcinoma, also known as malignant oncocytoma, is a malignant carcinoma. It can occur in many organs, including the breast and the pancreas, but it occurs most frequently in the thyroid. 1. The occurrence of oncocytic carcinoma in the salivary glands has rarely been reported.

What are the signs of renal cell carcinoma?

Kidney Cancer Signs and Symptoms

• Blood in the urine (hematuria)
• Low back pain on one side (not caused by injury)
• A mass (lump) on the side or lower back.
• Fatigue (tiredness)
• Loss of appetite.
• Weight loss not caused by dieting.
• Fever that is not caused by an infection and that doesn’t go away.

How is AMACR used to diagnose prostate cancer?

One of the most widely used markers of prostate carcinoma, because this protein is upregulated in prostate carcinoma and not found in benign prostate tissue ( J Clin Pathol 2003;56:892, Am J Surg Pathol 2014;38:e6 )

Which is a rare type of renal oncocytoma?

Hes O, Michal M, Boudova L, Mukensnabl P, Kinkor Z, Miculka P. Small cell variant of renal oncocytoma–a rare and misleading type of benign renal tumor. Int J Surg Pathol. 2001 Jul;9 (3):215-22.

Where is the AMACR gene located on the chromosome?

Definition / general Alpha methyacyl CoA racemase (AMACR) is a mitochondrial and peroxisomal enzyme, a 382 amino acid protein essential in lipid metabolism, encoded by a 1621 bp sequence gene, located on chromosome 5p13 (J Clin Pathol 2003;56:892)

How is the diagnosis of oncocytoma made?

Diagnosis is made with the combination tissue histologic morphology and immunohistochemical profile, which should be consistent with indolent clinical behavior and a circumscribed mass lesion