What is Bosniak type cyst?
A Bosniak I cyst is a simple cyst which has a hairline-thin wall, without calcifications, septations, or enhancement. A Bosniak II cyst is minimally complicated. It may show a few hairline-thin septa, with small or short segment calcification in the cyst wall/septa.
What is Bosniak classification of renal cysts?
The Bosniak classification system of renal cystic masses divides renal cystic masses into five categories based on imaging characteristics on contrast-enhanced CT. It is helpful in predicting a risk of malignancy and suggesting either follow up or treatment.
Is a complex cyst on kidney serious?
More complicated cysts (complex kidney cysts or complex renal cysts) can interfere with kidney function, or create other complications. Complex kidney cysts require close radiographic imaging (CT scan or MRI), or surgical removal since these cysts can be cancerous.
What percent of complex kidney cysts are cancerous?
There is little debate that category IV lesions require surgical removal of the kidney. Approximately 85 percent to 100 percent of these are cancer.
Do complex kidney cysts need to be removed?
A complex kidney cyst is a cyst that has a more irregular shape or thicker walls than a simple cyst. Imaging techniques may be used to periodically assess a complex cyst. If it has become large enough to cause pain, discomfort, or high blood pressure, it may need to be surgically removed.
What makes a kidney cyst complex?
On kidney ultrasound, if a cyst contains only some fluid inside of it and nothing else, it is typically a simple and benign cyst. If the cyst contains something inside besides fluid, we call these “complex cysts”.
Can a Bosniak 2 cyst become cancerous?
Cysts are graded on a scale from 1 to 4 (Bosniak Classification). Bosniak 1 and 2 lesions are likely to be benign whereas Bosniak 3 and 4 lesions are more likely to be cancerous.
What is a Bosniak class 1 cyst?
Discussion. Bosniak classification type 1, simple renal cysts have hairline-thin walls that do not contain septa, calcification, or solid components. Density of their contents has water’s one [−10 to 20 HU] and do not enhance with contrast material.
How do you treat a complex kidney cyst?
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.