What is a renal oncocytoma?
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.
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.
What is the most common renal malignancy?
Renal cell carcinoma (RCC), also known as renal cell cancer or renal cell adenocarcinoma, is the most common type of kidney cancer. About 9 out of 10 kidney cancers are renal cell carcinomas.
How is oncocytoma treated?
Treatment. Renal oncocytoma is considered benign, cured by nephrectomy. There are some familial cases in which these tumors are multicentric rather than solitary. However, they may be resected to exclude a malignant tumor, e.g. renal cell carcinoma.
What is a Nephroma?
Nephroma is a tumor of the kidney cortex. The renal cortex is the outer portion of the kidney that filters the blood and removes waste inside the body. There are several kinds of nephroma, which fit into two main types: non-cancerous (benign) and cancerous (malignant).
Is renal cell carcinoma always malignant?
Renal Cell Carcinoma (RCC) is the most common type of kidney cancer, accounting for approximately 85% of all malignant kidney tumors. In RCC, cancerous (malignant) cells develop in the lining of the kidney tubules and grow into a mass called a tumor.
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.
What is a parotid oncocytoma?
Parotid gland oncocytoma is an uncommon, benign salivary neoplasm composed of mitochondria-rich epithelial cells called oncocytes. In the parotid gland, oncocytomas most commonly occur in adults in their sixth to eighth decades, with no sex predilection.
What is Oncocytosis?
Oncocytes are epithelial cells with abundant, granular, eosinophilic cytoplasm due to presence of numerous large mitochondria of varied sizes. The presence of oncocytes in salivary glands can occur in a variety of conditions.
What are the causes of kidney oncocytoma tumors?
The exact underlying cause of most isolated (single tumor affecting one kidney) renal oncocytomas is unknown; however, multiple and bilateral (affecting both kidneys) renal oncocytomas sometimes occur in people with certain genetic syndromes such as tuberous sclerosis complex and Birt-Hogg-Dube syndrome.
What is oncocytic renal neoplasm?
Renal oncocytoma (RO) is commonly considered as a benign renal cell neoplasm. Histopathologically , the tumor is characterized by a proliferation of oncocytic renal epithelial cells displaying alveolar, tubular, or cystic patterns.
What is oncocytoma of kidney?
Oncocytoma of Kidney is a benign solid tumor of the kidney that is generally diagnosed in middle-age and older adults. In many cases, the tumors are found incidentally while examining the individual for other medical conditions
What is kidney pathology?
Renal pathology is a branch of medical practice concerned with diagnosis and treatment of kidney diseases. A vital branch of study, renal pathology guides treatment plans for kidney problems from diagnosis to final state. Pathologists specializing in kidney diseases often work cooperatively with other doctors,…