What is renal oncocytoma
What is an oncocytoma?
An oncocytoma is a tumor made up of epithelial cells called oncocytes. This abnormal growth is usually associated with the kidneys and salivary glands. However, it can appear anywhere in the body. The tumor is also known as an oncocytic adenoma or oxyphilic adenoma.
Oncocytoma occurs in the epithelium, the tissue that covers the surface of organs and various parts of the body. Also, it is often described as a benign tumor, which means that it will not develop into cancer and is therefore harmless. This status puts it in the adenoma category, which is a collection of benign epithelial tumors. This categorization explains the alternative term oncocytic adenoma. The term oxyphilic adenoma arises when the oncocytes are eosinophilic or "acid-loving" cells.
The most common type of oncocytoma is renal oncocytoma. Medical researchers believe that the tumor originates from intercalated cells, which are epithelial cells found in the collecting duct system of the kidneys. Because this condition is asymptomatic with few or no symptoms of the disease, it is usually discovered unintentionally through a CT scan or ultrasound technology. When symptoms occur, they include a release of blood in the urine or hematuria; Pain in the sides; and bloated stomach.
Another common form of oncocytoma is salivary gland oncytoma. that makes up a tiny percentage of all tumors. It is commonly found in the parotid, the largest salivary gland in the body. The masses are described as firm and painless with a size of no more than 4 cm. Women in their 70s and 80s are more likely than any other group of people to develop this tumor. Like the abnormal growth of the kidneys, salivary oncocytoma is asymptomatic, although, particularly with thyroid oncocytoma, the patient may have difficulty speaking or swallowing if the tumor gets larger.
Although the oncocytoma is believed to be benign, the oncocytes themselves can be malignant and consequently develop into cancer. In this case, the adenoma turns into carcinoma, the malignant form of an epithelial tumor. For example, renal oncocytoma can develop into renal cell carcinoma, which is the most common type of kidney cancer in adults. Also known as hypernephroma, it is considered to be one of the deadliest cancers because it is asymptomatic and resistant to chemotherapy and radiation therapy in the early stages. The tumors in the thyroid can also be malignant, and it is often difficult to differentiate a carcinoma from an adenoma.
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