What can a lesion on the kidney mean?
The majority is benign simple renal cysts and can be diagnosed with confidence. However, cystic renal lesions can have benign as well as malignant causes. Possible malignant causes include renal cell carcinoma (RCC) and metastasis.
Does a lesion on the kidney mean cancer?
If a kidney lesion is a solid mass, particularly one that picks up blood and thus “enhances” on contrast CT, it is considered malignant until proven otherwise. In the era of CT scan however, masses are found at a much smaller size than ever before.
What percentage of kidney lesions are cancerous?
About 20-30% of “suspicious” kidney tumors when removed prove to be benign! These benign growths include cysts, oncocytomas, angiomyolipomas, and mixed epithelial stromal tumors. Thus, 70-80% of these “small” kidney tumors are cancers and fortunately the majority are “well behaved” (low grade) cancers.
Can a lesion in kidney be benign?
Kidney tumors (also called renal tumors) are growths in the kidneys that can be benign or cancerous.
Is a lesion on your kidney serious?
Kidney cysts are round pouches of fluid that form on or in the kidneys. Kidney cysts can be associated with serious disorders that may impair kidney function. But more commonly, kidney cysts are a type called simple kidney cysts — noncancerous cysts that rarely cause complications.
How do you treat a lesion on the kidney?
Options include:
- Puncturing and draining the cyst, then filling it with alcohol. Rarely, to shrink the cyst, your doctor inserts a long, thin needle through your skin and through the wall of the kidney cyst.
- Surgery to remove the cyst. A large or symptomatic cyst may require surgery to drain and remove it.
What are symptoms of kidney lesions?
Symptoms
- Hematuria (blood in urine)
- Flank pain between the ribs and hips.
- Low back pain on one side (not caused by injury) and that does not go away.
- Loss of appetite.
- Weight loss not caused by dieting.
- Fever not caused by an infection and that does not go away.
- Anemia (low red blood cell count)
What is kidney lesion mass?
A renal mass, or tumor, is an abnormal growth in the kidney. Some renal masses are benign (not cancerous) and some are malignant (cancerous). One in four renal masses are benign. Smaller masses are more likely to be benign. Larger masses are more likely to be cancerous.