Is oncocytoma a cancer?
An oncocytoma is a tumor made up of oncocytes, epithelial cells characterized by an excessive amount of mitochondria, resulting in an abundant acidophilic, granular cytoplasm. The cells and the tumor that they compose are often benign but sometimes may be premalignant or malignant….
| Oncocytoma | |
|---|---|
| Specialty | Oncology |
What is oncocytoma of kidney?
Listen. 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.
What does oncocytoma mean?
Medical Definition of oncocytoma : a tumor (as of the parotid gland) consisting chiefly or entirely of oncocytes.
How common is renal oncocytoma?
Renal oncocytomas are common benign kidney neoplasms that account for 3 to 7 percent of renal neoplasms. They usually occur in adults, most frequently in the seventh decade of life. Renal oncocytomas may be discovered incidentally or may be diagnosed with biopsy or excision.
Should oncocytoma be removed?
Although many benign tumors do not require treatment unless they are causing unpleasant symptoms, it can be difficult to confidently differentiate a renal oncocytoma from renal cell carcinoma. Most affected people are, therefore, treated with surgery which allows for confirmation of the diagnosis.
Can an oncocytoma become malignant?
The malignant counterpart of oncocytoma is oncocytic carcinoma, which may not always be easy to diagnose based on cytologic features alone. Oncocytic carcinoma is a diagnosis of exclusion after ruling out oncocytic variants of other more common tumors such as mucoepidermoid carcinoma.
Can oncocytoma be malignant?
What are the symptoms of oncocytoma?
Renal oncocytomas are often asymptomatic and are frequently discovered by chance on a CT or ultrasound of the abdomen. Possible signs and symptoms of a renal oncocytoma include blood in the urine, flank pain, and an abdominal mass.
Where is oncocytoma found?
It is well-circumscribed and demarcated from the surrounding salivary gland parenchyma by at least a partial fibrous capsule. Most oncocytomas occur in the parotid gland, and the peak incidence is in the seventh to ninth decades; these tumors are rare in patients under 50 years of age.
What does Bibliophobia mean?
strong dislike of books
Definition of bibliophobia : strong dislike of books.
Is chromophobe RCC hereditary?
This rare type of cancer can run in families as part of a rare genetic disorder called Birt-Hogg-Dubé syndrome. The disorder’s genetic nature has allowed researchers a small window of opportunity to study it; however, very little is known about the genetic basis of sporadic (non-hereditary) chromophobe kidney cancer.